Conceptual Set 1. A different researcher takes a sample of recently widowed spouses to measure how many times they leave the house. She wants to see if her sample is different from the population mean, which she knows to be 23.00. Which type of t-test should she use

One sample t-test

Explanation:

The one sample t-test , also called single sample t test is a type of t test that measures the difference between a population mean and a hypothesized value,in this case the sample mean of widowed spouses that leave the house. The sample mean/hypothesized value is called the test value while the population mean is called the test variable. The one sample t test can only compare one sample mean to another given mean and not the mean of two samples or more.

the answer is d. 75%

if x = 1, then the answer is 3.5