Question

Steps to be covered:

1. state the hypothesis and identify the claim
2. find the critical value from the table and mention the acceptance range for H0
3. compute the test value
4. make the decision to reject or not the null hypothesis

Claim tests are two-tail tests only if you have to test for strict equality;

If the claim says “at least”, “less”, “at most”, “no more than”….. it means that a one-tail test should be performed

A college wants to know the lower limit of a two-sided 80% confidence interval for SAT scores on the Math section (range equals 200 to 800).

They sampled 1000 students and found that the sample mean was 580 and the sample standard deviation was 40.

Answer 1

A college wants to lower limit of two sided 80% confidence interval for sat scores on the math section

80% confidence interval = ( 200,800)

Lower limit = 200

Another question not complete because there not given hypohesised mean