Calculate the standard error of the sample mean

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1) For the given information, calculate the standard error of the sample mean. 

m = 94

s = 30

n = 25

M = 98

2) Find the value of tcriticical for a group of 23 subjects and a = .05 on a 2-tail test.

3) For the given information, find t. 

m = 74

s = 35

n = 49

M = 83

4) An SAT preparation program's claim to improve scores is tested by 36 students. The mean score for the group is found to be 507 with a standard deviation of 24. Given the population mean of m = 500, does this study provide evidence to support the claim? (Assume a = .05 on a 1-tail test.)

Reference no: EM132388431

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