A Survey Claims That 7 Out of 10 Customers Recommend

Essay

A survey claims that 7 out of 10 customers recommend Western Drugs for pharmacy
issues. To test this claim, a random sample of 100 customers is obtained from the list of
rewards customers. Of these 100 customers, 75 indicate that they recommend using
Western Drugs for pharmacy needs. We would like to know if this claim is accurate.
Use alpha = 0.05
A. Write the null and alternative hypotheses.
b. Let's perform a one sample z-test for proportions: What is the value of the test statistic?
c. What is the associated P-value?