Question

An SRS of 16 Spokane County Schools' seniors had a mean SAT Verbal score of 500 with a standard deviation of s = 100. We know that the population is normally distributed. We wish to determine a 90% confidence interval for the mean SAT Verbal score µ for the population of all seniors in the district.

--> Carry out the appropriate test of significance at the 5% level and write your conclusions.

Answer 1

@amistre64 @.Sam. ?

Answer 2

@hartnn

Answer 3

I got this so far: At a 5 percent significance level, the critical value (for one tailed test) is 1.645. Here, n= 16, so sqrt is 4. (100 / 4 = 25)

Answer 4

@Preetha @radar

Answer 5

You've gotten further than I could have, statistics is a subject I need to restudy. sorry.