1. If two variables have a strong positive linear correlationthen the value of r
ID: 2916596 • Letter: 1
Question
1. If two variables have a strong positive linear correlationthen the value of r, the estimated correlation, is probably closestto which of the following?a.0.03 b.-0.9 c.3.6 d.0.8 e. 0.6 2. If on a college entrance exam a person's score wasassociated with a z-value of 1.8, what percent of the populationtaking that college entrance exam scored higher than thatperson? a.3.29% b. 93.32% c.88.49% d.6.68% e. 97.44% 3. If the p-value of a hypothesis test is 0.08 then the nullhypothesis should be rejected for a maximum allowable error rate of10%. False 4. The standard errors of point estimates increase in size asthe sample size increases. True 5. A marketing firm is interested in comparing twopopulations. The firm randomly sampled 25 observations fromeach of the populations. Use the results from the two samplesto answer SampleOne SampleTwo Mean 1642 1367 Variance 121 196 A. State the numerical value of the estimated standard errorof the point estimate for the difference between the populationmeans. B. State the numerical value of the test statistic to testequality of the two population variances. 1. If two variables have a strong positive linear correlationthen the value of r, the estimated correlation, is probably closestto which of the following?
a.0.03 b.-0.9 c.3.6 d.0.8 e. 0.6 2. If on a college entrance exam a person's score wasassociated with a z-value of 1.8, what percent of the populationtaking that college entrance exam scored higher than thatperson? a.3.29% b. 93.32% c.88.49% d.6.68% e. 97.44% 3. If the p-value of a hypothesis test is 0.08 then the nullhypothesis should be rejected for a maximum allowable error rate of10%. False 4. The standard errors of point estimates increase in size asthe sample size increases. True 4. The standard errors of point estimates increase in size asthe sample size increases. True 5. A marketing firm is interested in comparing twopopulations. The firm randomly sampled 25 observations fromeach of the populations. Use the results from the two samplesto answer SampleOne SampleTwo Mean 1642 1367 Variance 121 196 A. State the numerical value of the estimated standard errorof the point estimate for the difference between the populationmeans. B. State the numerical value of the test statistic to testequality of the two population variances.
Explanation / Answer
Question 2: P(Z>1.8) ˜ 0.03593. Hence the answer will be closest to a) 3.29%.
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