Chapter 9: Hypothesis Testing of Single Mean and Single Proportion Lab

Student Learning Outcomes:
The student will select the appropriate distributions to use in each case.
The student will conduct hypothesis tests and interpret the results.
Fill out a solution sheet for each of the hypothesis tests below. Hand in this cover sheet with the 3 solution sheets stapled to it.
1. Television Survey
In a recent survey, it was stated that Americans watch television on average four hours per day. Assume that ( = 2. Using your class as the sample, conduct a hypothesis test to determine if the average for students at your school is lower.
DATA TO USE: n = 30 sample average 3.2 hours.

2. Language Survey
According to the 2000 Census, about 39.5% of Californians and 17.9% of all Americans speak a language other than English at home. Using your class as the sample, conduct a hypothesis test to determine if the percent of students at your school that speak a language other than English at home is different from 39.5%.
DATA TO USE: 20 out of 30 in class sample speak a language other than English at home.

3. Jeans Survey
Suppose that young adults own an average of 3 pairs of jeans. Survey 8 people from your class to determine if the average for your class is higher than 3.
DATA TO USE: 1,2,3,3,3,4,5,7
SOLUTION SHEET: Hypothesis Testing for Single Mean and Single Proportion

1. Television Survey In a recent survey, it was stated that Americans watch television on average four hours per day. Assume that ( = 2. Using your class as the sample, conduct a hypothesis test to determine if the average for students at your school is lower.
a. Ho: _______________ b. Ha: ___________________

c. In words, CLEARLY state what your random variable or P’ represents.

____________________________________________________________

____________________________________________________________

d. State the distribution to use for the test. …