A Survey Claims That 7 Out of 10 Customers Recommend

question 13

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?

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Definitions:

Bereavement Support Group

A gathering of individuals who have experienced the loss of a loved one, offering a communal space for sharing grief and receiving emotional support.

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An aspect of the surrounding environment that can potentially harm one's health or increase the likelihood of developing a disease.

High Levels of Lead

The presence of an elevated concentration of lead in the body, which can lead to toxic effects and health issues.