Question

Bill, a psychologist, has developed a new aptitude test. He was able to show (through a somewhat dubious study) that 78% of the public passed the test. A second psychologist, Tamera, wants to recreate this study. She believes the actual percentage is not 78%. A random sample of 200 people took the test, and 166 passed.

a) State the null and alternate hypotheses to test the claim that the actual percentage is different than 78%.

H₀: p=
H_A: p≠

b) What is the point estimate for the proportion of the public that passed the test?

Point Estimate =

c) Using a standard error of 0.0314, what is the test statistic?

Test Statistic =   

d) Compute the p-value.

The p-value =

Answer 1