6. (3) A sample size of n-64 is drawn from a population where error (maximum err

Question

6. (3) A sample size of n-64 is drawn from a population where error (maximum error of the estimate) for a 95% confidence interval 4.0 Find the margin of 7. Which one of t means when the population standard deviations are known? a. Z b. T c. Chi-Square d. None of the above he following tests can be used to test the difference between two sample when a 99% confidence interval is calculated instead of a 95% confidence interval, with n being the same, the margin of error will be: 8, a. Smaller b. Larger c. The same d. Cannot be determined ). The best point estimate for u is Samee meAW he null 0. If the Z test value for the difference between the means of two large samples is 2.57 he critica

Explanation / Answer

7. For testing the difference in case if population standard deviations are known, we use z test.

Option A is correct.

8. Increasing the confidence interval increases the margin of error. Hence,

Option B is correct.

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