9
Right tailed, mu.
10
Left tailed, p.
11
Two tailed, sigma.
12
Right tailed, p.
13
Left tailed, mu.
14
Two tailed, sigma.
15
Ho: p = .105
H1: p > .105
Type 1 error: Determining the true proportion p is greater then .105 when it is not.
Type 2 error: Determining the true proportion p is not greater then .105 when it is.
17
Ho: mu = $218,600
H1: mu < $218,600
Type 1 error: Determining that the mean price of an existing single-family home has descreased when the mean price had not decreased.
Type 2 error: Determing that the mean price of an existing home didn’t decrease when the mean price did decrease.
19
Ho: sigma = .7 psi
H1: sigma < .7 psi
Type 1 error: The manager rejecting the likelihood that the variability in the pressure needed is .7 psi when the variability actually needed is .7 psi.
Type 2 error: The manager doesn’t reject the variability that the pressure needed is .7 psi when the variability is less than .7 psi.
21
Ho: mu = $47.47
H1: mu not equal to $47.47
Type 1 error: Determining that the mean month cell phone bill is not $47.47 when the mean bill is actually $47.47.
Type 2 error: Determining that the mean monthly phone bill is $47.47 when the mean bill is not $47.47.
7
np(1-9) is greater then or equal to 10.
The Pvalue = .0104
Reject the Null Hypothesis.
9
np(1-9) is greater then or equal to 10.
The Pvalue = .023
Do not reject the Null Hypothesis.
11
np(1-9) is greater then or equal to 10.
The Pvalue = .1362
Do not reject the Null Hypothesis.
13
This Pvalue means that because the probability is not small, we don’t reject the null hypothesis. There is not enough evidence to come to the conclusion that the dart-picking strategy led to a majority of winners.
15
The Pvalue = .2578
There is not enough evidence to conclude that more than 1.9% of Liptor users experience flulike symptoms as a side effect.
17
The Pvalue = .1379
There is not enough evidence to conclude that a majority of adults in the United States believe that they will not have enough money in retirement.
19
The Pvalue = .0047
There is enough evidence to support the claim that the proportion of employed adults who feel basic mathematical skills are important to their job is greater than .56.