Select the right choice for each question Find the area under the standard norma

Question

Select the right choice for each question Find the area under the standard normal curve to the left of -1.25 A) 0.1056 B) 0.3044 C) 0.00528 D) 0.8044 Find the area under the standard normal curve to the right of 1.25 A) 0.1056 B) 0.8944 C) 0.0528 D) 0.3944 Find the area under the standard normal curve between 0 and 2.25 A) 0.2430 B) 0.5122 C) 0.9878 D) 0.4878 Find the area under the standard normal curve that lies between Z = 1.8 and Z = 2 A) 0.4772 B) 0.5228 C) 0.0132 D) 0.9868 Find the area under the standard normal curve to the right of z = 1.6. A) 0.4452 B) 0.0548 C) 0.0274 D) 0.9452 Find the z-score for which the area to the right is 0.07. A) 1.74 B) 1.59 C) 1.48 D) 1.35 Find the c-scores that bound the middle 74% of the area under the standard normal curve. A) -1.13, 1.13 B) -1.07, 1.07 C) -0.99, 099 D)-1.24, 1.24 A bottler of drinking water fills plastic bottles with a mean volume of 993 milliliters (mL) and standard deviation 6 mL. The fill volumes are normally distributed. What proportion of bottles have volumes between 991 mL and 997 mL A) 0.3377 B) 0.3779 C) 0.3707 D) 0.7486 A bottler of drinking water fills plastic bottles with a mean volume of 999 milliliters (mL) and standard deviation 4 mL. The fill volumes are normally distributed. What proportion of bottles have volumes greater than 994 mL? A) 0 9599 B) 1.0000 C)0.8925 D) 0.8944 A certain car model has a mean gas mileage of 29 miles per gallon (mpg) with a standard deviation 5 mpg. A pizza delivery company buys 38 of these cars. What is the probability that the average mileage of the fleet is greater than 27.8 mpg? A) 0.9306 B) 0.0465 C) 0.8599 D) 0.9535 The mean number of pets per household is 3.25 with standard deviation 1.3 A sample of 59 households is drawn. Find the 74th percentile of the sample mean. A) 3.86 B)4.11 C) 3.36 D)2.70 At a cell phone assembly plant, 77% of the cell phone keypads pass inspection. A random sample of 98 keypads is analyzed. Find the mean mu_p A) 0.23 B) 0.96 C) 0.043 D) 0.77 At a cell phone assembly plant, 83% of the cell phone keypads pass inspection A random sample of 192 keypads is analyzed. Find the probability that less than 86% of the sample keypads pass inspection. A) 0 8665 B) 0.1038 C) 0.8962 D) 0.1335

Explanation / Answer

1)option A

2)option A

3)option D

4)option C

5)option B

6)option C

7)option A

8)option B

9)option D

10)option A

11)option C

12)option D

13)option A

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