Mathematics problem solving
178175 questions • Page 117 / 3564
1) The characteristic of a simple random sample that makes is possible to genera
1) The characteristic of a simple random sample that makes is possible to generalize results from the sample to the population from which it has been selected is that __________. …
1) The claim is that the proportion of adults who smoked a cigarette in the past
1) The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.35, and the sample statistics include n=1556 subjects with 560 saying that the…
1) The combined capacity of a bottle and a glass is equal tothe capacity of a pi
1) The combined capacity of a bottle and a glass is equal tothe capacity of a pitcher. The capacity of abottle is equal to the combined capacity of a glass and amug. The combined …
1) The company comes out with yet another sweetener and you want to know if any
1) The company comes out with yet another sweetener and you want to know if any of these changes has changed amount of calories in the product. So you go out and collect 10 of the…
1) The country that has the most extensive cell phone penetration rate is ______
1) The country that has the most extensive cell phone penetration rate is __________. A. Canada B. China C. France D. Mexico E. Russia 2) The country that has the lowest personal …
1) The demand curve that a monopoly faces is Q D = 953 - 8P. Rearranging this yi
1) The demand curve that a monopoly faces is QD = 953 - 8P. Rearranging this yields the inverse demand curve P = 953/8 - QD/8. The marginal revenue curve is MR = P = 953/8 - 2QD…
1) The demand during the lead-time is normally distributed with a mean of 50 and
1) The demand during the lead-time is normally distributed with a mean of 50 and a standard deviation S pointh mpany wishes to maintain a 90 percent service level, how much safety…
1) The distribution of the amount of change in UF student\'s pockets has an aver
1) The distribution of the amount of change in UF student's pockets has an average of 2.02 dollars and a standard deviation of 3.00 dollars. Suppose that a random sample of 45 UF …
1) The following 25 measurements were taken of the thickness of steel emerging f
1) The following 25 measurements were taken of the thickness of steel emerging from a rolling mill. 3.97 3.99 4.04 4.00 3.98 4.03 4.00 3.98 3.99 3.96 4.02 3.99 4.01 3.97 4.02 3.99…
1) The following output is for the ARIMA model of a monthly time series of size
1) The following output is for the ARIMA model of a monthly time series of size 178: Type Coef SE Coef T P AR 1 -0.1716 0.0774 -2.22 0.028…
1) The following output is for the ARIMA model of a monthly time series of size
1) The following output is for the ARIMA model of a monthly time series of size 178: Type Coef SE Coef T P AR 1 -0.1716 0.0774 -2.22 0.028…
1) The following represents data of children IQ scores on the Stanford revision
1) The following represents data of children IQ scores on the Stanford revision of the Binet-Simon intelligence scale: 6 25679 0000124555668 0000112333446666778889 9 10 0001122222…
1) The following system of linear equations are intersecting lines: - 6x + 4y =
1) The following system of linear equations are intersecting lines: - 6x + 4y = 7 and 3x -2y = 4 True or false? 2)Solve the following system of linear equations: x = -4 and x + 4y…
1) The graph of the function f(x) = 4x^3 - 48x has one local maximum point and o
1) The graph of the function f(x) = 4x^3 - 48x has one local maximum point and one local minimum point. Find these points using the derivative test. 2) The graph of the following …
1) The graph of the function f(x)= 4x^3 - 48x has one local maximum and one loca
1) The graph of the function f(x)= 4x^3 - 48x has one local maximum and one local minimum point. Find these points using the first derivative test. 2) The graph of the following f…
1) The hour hand on a clock is 4 inches long, the minutehand 6 inches long, and
1) The hour hand on a clock is 4 inches long, the minutehand 6 inches long, and the second hand 7 inches long. Assumethat t = 0 corresponds to 12:00PM. a) Determine the total dist…
1) The life in hours of a 75-watt light bulb is known to be normally distributed
1) The life in hours of a 75-watt light bulb is known to be normally distributed with = 23 hours. A random sample of 20 bulbs has a mean life of Overscript bar EndScripts = 1014 h…
1) The life in hours of a 75-watt light bulb is known to be normally distributed
1) The life in hours of a 75-watt light bulb is known to be normally distributed with = 23 hours. A random sample of 20 bulbs has a mean life of Overscript bar EndScripts = 1014 h…
1) The linear correlation is determined to be r= -.9701. Conduct an appropriate
1) The linear correlation is determined to be r= -.9701. Conduct an appropriate hypothesis test to determine if the weight and MPG of the vehicle are correlated. 2) The regression…
1) The linear regression model postulates that; Y = b + mX + e. In this equation
1) The linear regression model postulates that; Y = b + mX + e. In this equation, ‘b’ stands for: the y-intercept. A random variable with a mean of zero. the number of claims. the…
1) The local electric company wants to determine the relationship between electr
1) The local electric company wants to determine the relationship between electricity consumption and the thermostat settings of customer water heaters. They collected data on the…
1) The mean lifetime of cardiac stents is 8.9 years. A medical device company ha
1) The mean lifetime of cardiac stents is 8.9 years. A medical device company has implemented some changes to the manufacturing process and wants to determine if these changes aff…
1) The mean of 10 numbers is 8. If an 11th number is now included in the results
1) The mean of 10 numbers is 8. If an 11th number is now included in the results, the mean becomes 9. What is the value of the 11th number? Produce an algebraic solution. Guess an…
1) The most likely way for the results of a t test to be presented in a research
1) The most likely way for the results of a t test to be presented in a research article for a study with 25 participants is A) t(24) = 2.94, p < .01. B) t(24) < significant…
1) The normal distribution can be used to approximate the sampling distribution
1) The normal distribution can be used to approximate the sampling distribution of the sample proportion with a probability of success .77, if the sample size is greater than or e…
1) The normal healing of a wound can be modeled by the exponential function- Age
1) The normal healing of a wound can be modeled by the exponential function- Age sn, where Ao represents the initial area of the wound and A represents the area of the wound a wou…
1) The number of megapixels in a digital camera is one of the most important fac
1) The number of megapixels in a digital camera is one of the most important factors in determining picture quality. But do digital cameras with more megapixels cost more? The fol…
1) The number of pages in a population is normally distributed with a mean of 38
1) The number of pages in a population is normally distributed with a mean of 38.2 pages and a standard deviation of 5.1 pages. A. If a single report is randomly selected, find th…
1) The number of refrigerators sold per day at a local appliance store given in
1) The number of refrigerators sold per day at a local appliance store given in the probability distribution below. {# of refrigerators sold X}-- 0 -- 1 -- 2 -- 3 -- 4 -- ________…
1) The ogive (cumulative percentage polygon) gives data for how much individuals
1) The ogive (cumulative percentage polygon) gives data for how much individuals have invested in the stock market in 2017. Use this ogive to answer the questions below. (a) What …
1) The one-sample tstatistic for a test of H0:=42 versus H1:
1) The one-sample tstatistic for a test of H0:=42 versus H1:<42 based on n=15 observations has the value t=1.075, where H0 and H1are the null and alternative hypotheses, respec…
1) The owner of a candy store notices that 20 pounds of gourmet cashews are gett
1) The owner of a candy store notices that 20 pounds of gourmet cashews are getting stale. They did not sell because of their high price of $12 per pound. The store owner decides …
1) The patient recovery time from a particular surgical procedure is normally di
1) The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.6 days and a standard deviation of 1.6 days. What is the z-score for a p…
1) The prizes at a carnival tossing game are different stuffed animals. There ar
1) The prizes at a carnival tossing game are different stuffed animals. There are 34 tigers, 27 bears, 12 hippopotamuses, 16 giraffes, and 22 monkeys. The carnival manager randoml…
1) The probability density function of a random variable X is given by f(x) = 1
1) The probability density function of a random variable X is given by f(x) = 1 for 0 <= x <= 1 and 0 elsewhere. Then P(X = 0.25) = (I believe it is 0, is that right?) a. 0.…
1) The probability of snow if February is 0.2. For 6 randomly chosen years, what
1) The probability of snow if February is 0.2. For 6 randomly chosen years, what is the probability that exact 3 of them had snow in any order. Give your answer as 0.XX 2) If the …
1) The probability of snow if February is 0.2. For 6 randomly chosen years, what
1) The probability of snow if February is 0.2. For 6 randomly chosen years, what is the probability that exact 3 of them had snow in any order. Give your answer as 0.XX 2) If the …
1) The probability that a person passes a test on the first try is 0.67. The pro
1) The probability that a person passes a test on the first try is 0.67. The probability that a person who fails the first test will pass on the second try is 0.78. The probabilit…
1) The problem is to excavate within a permissible area in order to obtain valua
1) The problem is to excavate within a permissible area in order to obtain valuable ore. The volume to be excavated is divided into blocks (50 foot cubes). Each block has a certai…
1) The process of inferring a population parameter from sample data is? 2) [x] i
1) The process of inferring a population parameter from sample data is? 2) [x] is the probability distribution of values that might be obtained for an estimate of a population par…
1) The radioactive element carbon- 14 has a half-life of 5750 years. If 100 gram
1) The radioactive element carbon- 14 has a half-life of 5750 years. If 100 grams of this element are present initially how much will be left after 1000 years? 2) If $1000 is inve…
1) The radius of a spherical balloon is increasing at a rate of 3 centimeters pe
1) The radius of a spherical balloon is increasing at a rate of 3 centimeters per minute. How fast is the volume changing when the radius is 12 centimeters? "Just need the answer"…
1) The retention region typically falls where in the sampling distribution of th
1) The retention region typically falls where in the sampling distribution of the mean? 2) A research report says that t (142) = 2.56; p = .06. From that information, can you reje…
1) The sales fro sunflowers a chain of apparel stores for women, have increased
1) The sales fro sunflowers a chain of apparel stores for women, have increased during the past 12 years as the chain expanded the number of stores open. Until now, sunflowers sen…
1) The sales fro sunflowers a chain of apparel stores for women, have increased
1) The sales fro sunflowers a chain of apparel stores for women, have increased during the past 12 years as the chain expanded the number of stores open. Until now, sunflowers sen…
1) The sample mean and standard deviation from a random sample of 22 observation
1) The sample mean and standard deviation from a random sample of 22 observations from a normal population were computed as x¯=40 and s = 13. Calculate the t statistic of the test…
1) The sensitivity chart conveys which of the following? a. The relative frequen
1) The sensitivity chart conveys which of the following? a. The relative frequency of various results cell values. b. The increase in profit per unit increase in an uncertain vari…
1) The sensitivity chart conveys which of the following? a. The relative frequen
1) The sensitivity chart conveys which of the following? a. The relative frequency of various results cell values. b. The increase in profit per unit increase in an uncertain vari…
1) The standard deviation of the sampling distribution of the sample mean is als
1) The standard deviation of the sampling distribution of the sample mean is also called Select one: a. central limit theorem b. population standard deviation c. standard error d.…
1) The standard deviation of the sampling distribution of the sample mean is als
1) The standard deviation of the sampling distribution of the sample mean is also called Select one: a. central limit theorem b. population standard deviation c. standard error d.…
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