Question

An economics professor is interested in seeing if the mean hours worked by ISU students in a week at part time or full time jobs (including work study) is greater than 10. To accomplish this, the professor randomly selected 50 students from the university. It was found that the distribution was right skewed and unimodal. The sample mean was 11 hours with a sample standard deviation of 3. The professor then did a hypothesis test. Please find the test statistic for this hypothesis test Group of answer choices

Answer 1

2.3574

Explanation:

This question requires us to find the t test statistic given the data in the question.

H0: u = 10

H1: u > 10

Population variance is not known

T = (barX - u)/(s/√n)

u = 10 hours

BarX = 11 hours

Sd = 3 hours

n = 50

(11-10)/(3/√50)

t test = 1/(3/√50)

= 1/0.4242

Test statistic = 2.3574