1. For each the following questions,

• Define the appropriate parameter(s)

• State ?! and ?!

• Choose the correct model from the following list:

  1. Test for a single mean

  2. Test for a single proportion

  3. Test for two means, independent samples

  4. Test for mean difference, dependent sampling

  5. Test for two proportions, independent samples

1. You want to support the claim that male bass singers are tallerthan male tenor singers. Parameter(s):

   Hypotheses: ?!: __________________ ?!: __________________ Modelto use: ______

2. You want to reject the claim that no more than 10% of studentswill suffer financial hardship if tuition

   increased. Parameter(s):

   Hypotheses: ?!: __________________ ?!: __________________ Modelto use: ______

3. You want to support the claim that people spend, on average,more time on the Internet than they do

   watching television. 200 people will be asked how much time theyspent on the TV and on the Internet. Parameter(s):

   Hypotheses: ?!: __________________ ?!: __________________ Modelto use: ______

4. You want to test the claim that the average age for a communitycollege student is over 27. You want to

   support this claim and sample 20 students. Parameter(s):

   Hypotheses: ?!: __________________ ?!: __________________ Modelto use: ______

5. Is there a difference in mean overall quality of tomatoes boughtat farmers markets versus at grocery

stores? Tomatoes are purchased at 30 randomly selected farmersmarkets and 40 randomly selected high- end grocers. Their meanoverall quality is compared.

Parameter(s):

Hypotheses: ?!: __________________ ?!: __________________ Modelto use: ______

6. A hospital surgery review board wants to determine if theproportion of patients undergoing a particular surgery who arecured is greater than the proportion that are cured by the currentnon-surgical standard treatment.

   Parameter(s):

   Hypotheses: ?!: __________________ ?!: __________________ Modelto use: ______

7. A higher education centered non-profit organization wants todetermine if the percentage of entering

   freshmen that graduate is lower at a public university than at aprivate college. Parameter(s):

   Hypotheses: ?!: __________________ ?!: __________________ Modelto use: ______

8. Does the home team have an advantage in NBA basketball games? Ina study of 25 games, the visiting

   team’s points were compared to the home team’s points.Parameter(s):

   Hypotheses: ?!: __________________ ?!: __________________ Modelto use: ______

9. A hypothesis test is performed to determine if recent femalecollege graduates are subject to pay discrimination, earning lesson average for similar work than recent male college graduates withsimilar qualifications.

   Parameter(s):

Hypotheses: ?!: __________________ ?!: __________________ Modelto use: ______