1. (a). write the null and alternative hypothesis for a mean that has a population value of 10 and is a two-tail test.

(b). if the sample mean is , the population standard deviation

is 6, and the sample size is 80, then type the test statistic formula and

answer

(c) write in the p-value using correct calculator syntax

(d) write the decision if the level of significance is 1%

1. write in the correct calculator syntax and answer for the critical value of a 92% confidence interval when you are estimating a mean, the population standard deviation is unknown and the sample size is 35.
2. write in the correct formula and answer for the standard error of the same 92% confidence interval when the sample deviation is 5.
3. write in the correct formula and answer for the 92% interval when the sample mean is 40 and the margin of error is 1.5