State the null and alternative hypotheses. A customer service center claims the mean time a customer is on hold is more

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State the null and alternative hypotheses.
A customer service center claims the mean time a
customer is on hold is more than 2 minutes.
H0: μ = 2 H1: μ < 2
H0: μ = 2 H1: μ > 2
H0: μ > 2 H1: μ = 2
H0: μ = 2 H1: μ ≠ 2
State the null and alternative hypotheses.
In 2008, 62% of American adults regularly volunteered
their time for charity work. A researcher believes that this
percentage has decreased today.
H0: p < 0 .62 H1: p = 0.62
H0: p = 0 .62 H1: p < 0 .62
H0: p = 0.62 H1: p≠0.62
H0: p≠0.62 H1: p = 0.62
H0: p = 0 .62 H1: p > 0 .62
Determine the test statistic for
the following situation:
H0: p =
0.23
versus H1: p ≠
0.23;
n =
200; x =
89
The test statistic is 7.23
The test statistic is 0.97
The test statistic is 5.04
The test statistic is 1.01
You are testing the claim that the mean
cost of a new car is more than
$25,200.
How should you interpret a decision that fail to
reject the null hypothesis?
There is sufficient evidence to conclude that the mean cost of a
new car is $25,200.
There is not sufficient evidence to conclude that the mean cost
of a new car is different than $25,200.
There is sufficient evidence to conclude that the mean cost of a
new car is more than $25,200.
There is not sufficient evidence to conclude that the mean cost
of a new car is more than $25,200.
There is sufficient evidence to conclude that the mean cost of a
new car is different than $25,200.