WorksheetsHypothesis Testing Review
Total questions: 22
Worksheet time: 30mins
Suppose the P-value for a hypothesis test is 0.0304. Using α=0.05 , what is the appropriate conclusion?
a) Reject the null hypothesis
b) Reject the alternative hypothesis
c) Fail to reject the null hypothesis
d) Fail to reject the alternative hypothesis
When p-value is greater than alpha we:
Reject Ho
Fail to reject Ha
Fail to reject Ho
Reject Ha
mark ALL that apply
This is a LEFT tail test
This is a RIGHT tail test
This has a significance level of 0.05
This has a critical value of 1.645
This has a critical value of -1.645
You are given the following test statistics below, determine which of the test statistics would allow for you to REJECT the NULL hypothesis
(mark as many as apply)
1.7
-1.7
-1.5
1.5
0.05
You are given the following test statistics below, determine which of the test statistics would cause you to FAIL to REJECT the NULL hypothesis
(mark as many as apply)
1.7
-1.7
-1.5
1.5
0.05
Mark all that apply
this has a significance level of 0.09
this has a significance level of 0.18
this is two tail test
the confidence level is 18%
Mark all that apply
one of the critical values is -1.431
one of the critical values is 1.431
one of the critical values is 1.341
one of the critical values is -1.341
none of these are critical values
You are given the following test statistics below, determine which of the test statistics would cause you to FAIL to REJECT the NULL hypothesis
(mark as many as apply)
-1.4
-1.3
1.3
1.4
-0.18
You are given the following test statistics below, determine which of the test statistics would allow for you to REJECT the NULL hypothesis
(mark as many as apply)
-1.4
-1.3
1.3
1.4
-0.18
Mark ALL that apply
This has a level of significance of 0.025
This is a left tail test
This is a right tail test
This has a level of significance of 0.975
You are given the following test statistics below, determine which of the test statistics would allow for you to REJECT the NULL hypothesis
(mark as many as apply)
2.0
1.9
1.95
-1.96
1.97
You are given the following test statistics below, determine which of the test statistics would cause you to FAIL to REJECT the NULL hypothesis
(mark as many as apply)
2.0
1.9
1.95
-1.96
1.97
A T-test sample has 7 pairs of samples. The distribution should contain ____________
16 degrees of freedom
15 degrees of freedom
5 degrees of freedom
6 degrees of freedom
Which of the following represents the appropriate null & alternative hypotheses for the following claim:
The mean height of women is greater than 64"
H₀: μ > 64"
Hₐ: μ ≠ 64"
H₀: μ ≤ 64"
Hₐ: μ > 64"
H₀: p > 64"
Hₐ: p ≠ 64"
H₀: p = 64"
Hₐ: p > 64"
How do you know when to use a z-test?
When population is known
When population standard deviation is known
When standard deviation is known
When population standard deviation is unknown
How do you know when to use a t-test?
When population is known
When population standard deviation is known
When standard deviation is known
When population standard deviation is unknown
How do you know when to use a 1-prop z-test?
When a proportion is given
When population standard deviation is known
When standard deviation is known
When population standard deviation is unknown
A fast food outlet claims that the mean waiting time in line is 3.5 minutes or less. A random sample of 60 customers has a mean of 3.56 minutes with a population standard deviation of 0.4 minute. α = 0.10. What is the critical value?
z=1.28
z=−1.28
t=1.30
t=−1.30
A fast food outlet claims that the mean waiting time in line is less than 3.5 minutes. A random sample of 60 customers has a mean of 3.56 minutes with a standard deviation of 0.4 minute. α = 0.10. What is the critical value?
z=1.28
z=−1.28
t=1.30
t=−1.30
A research center claims that at least 27% of U.S. adults think that the IRS will audit their taxes. In a random sample of 1000 U.S. adults in a recent year, 23% say they are concerned that the IRS will audit their taxes. What is your number of successes?
230
23
270
1000
