Question #1073
A researcher hypothesizes that people who listen to music via headphones have greater hearing loss and will thus score lower on a hearing test than those in the general population. On a standard hearing test, the overall mean for the general population is 22.5. The researcher gives this same test to a random sample of 12 individuals who regularly use headphones. Their scores on the test are 15, 14, 20, 20, 25, 22, 21, 19, 16, 17, 21, 22.
a. What statistical test should be used to analyze the data?
a. What statistical test should be used to analyze the data?
Expert's answer
a. We should use two-tailed t test.
Learn more about our help with Assignments: Statistics and Probability
Finding a professional expert in "partial differential equations" in the advanced level is difficult.
You can find this expert in "Assignmentexpert.com" with confidence.
Exceptional experts! I appreciate your help. God bless you!
#340153 on Dec 2023
#340153 on Dec 2023
Comments
The sample mean = 19.33, standard error = 0.94 a. We should use t test b. Two-tailed c. Ho: the sample average is equal to the population mean. Ha: & the sample average is not equal to the population mean. d. tobt = (22.5 - 19.33)/0.94 = 3.37 > t crit for alpha= 5% lt;/sub>= 2.2 e. Ho shouldn't & be rejected, the sample average can be equal to the population mean.