A student at a university wants to determine if the proportion
of students that use iPhones is different from 0.45. If the student
conducts a hypothesis test, what will the null and alternative
hypotheses be?

1)

H_{O}: p ≤ 0.45
H_{A}: p > 0.45 


2)

H_{O}: p > 0.45
H_{A}: p ≤ 0.45 


3)

H_{O}: p = 0.45
H_{A}: p ≠ 0.45 


4)

H_{O}: p ≠ 0.45
H_{A}: p = 0.45 


5)

H_{O}: p ≥ 0.45
H_{A}: p < 0.45 

A USA Today article claims that the proportion of people who
believe global warming is a serious issue is 0.79, but given the
number of people you've talked to about this same issue, you
believe it is less than 0.79. If you conduct a hypothesis test,
what will the null and alternative hypotheses be?

1)

H_{O}: p ≤ 0.79
H_{A}: p > 0.79 


2)

H_{O}: p < 0.79
H_{A}: p ≥ 0.79 


3)

H_{O}: p ≥ 0.79
H_{A}: p < 0.79 


4)

H_{O}: p = 0.79
H_{A}: p ≠ 0.79 


5)

H_{O}: p > 0.79
H_{A}: p ≤ 0.79 

Your friend tells you that the proportion of active Major League
Baseball players who have a batting average greater than .300 is
less than 0.62, a claim you would like to test. The hypotheses for
this test are Null Hypothesis: p ≥ 0.62, Alternative Hypothesis: p
< 0.62. If you randomly sample 29 players and determine that 22
of them have a batting average higher than .300, what is the test
statistic and pvalue?

1)

Test Statistic: 1.538, PValue: 1.876 


2)

Test Statistic: 1.538, PValue: 0.938 


3)

Test Statistic: 1.538, PValue: 0.938 


4)

Test Statistic: 1.538, PValue: 0.062 


5)

Test Statistic: 1.538, PValue: 0.062 

A student at a university wants to determine if the proportion
of students that use iPhones is different from 0.4. The hypotheses
for this scenario are as follows. Null Hypothesis: p = 0.4,
Alternative Hypothesis: p ≠ 0.4. If the student randomly samples 26
other students and finds that 9 of them use iPhones, what is the
test statistic and pvalue?

1)

Test Statistic: 0.56, PValue: 0.712 


2)

Test Statistic: 0.56, PValue: 0.575 


3)

Test Statistic: 0.56, PValue: 0.575 


4)

Test Statistic: 0.56, PValue: 0.425 


5)

Test Statistic: 0.56, PValue: 0.288 
