1. According to a 2011 report by the U.S. Department of Labor,civilian Americans spend 2.75 hours per day watching television. Afaculty researcher, Dr. Sameer, at California Polytechnic StateUniversity (Cal Poly) conducts a study to see whether a differentaverage applies to Cal Poly students. He surveys a random sample of100 Cal Poly students and finds the mean number of hours spentwatching TV is 3.07 hours. The sample standard deviation is 1 hour.The sample distribution is not strongly skewed.
a. Describe the parameter in words. Assign a symbol to it.
b. What is the value for the statistic? Assign a symbol toit.
c. Describe the null hypothesis in words.
d. Describe the alternative hypothesis in words.
e. Write your null hypothesis and alternative hypothesis frompart c and d using symbols.
f. Why we can use theory-based approach for this study?
g. Calculate the t-statistic. Show your work. h. Based on yourt-statistic, do you have strong evidence against the nullhypothesis?
i. Based on your result from part h, what type of error mayoccur?
j. Describe the type of error you identify in part I in thecontext of the question.
