WorksheetsHypothesis Testing-Mean (Small Sample)
Total questions: 10
Worksheet time: 5mins
A manufacturer claims that his tires last at least 40,000
miles. A test on 25 tires reveals that the mean life of a tire
is 39,750 miles, with a standard deviation of 387 miles.
Test the Manufacturer’s claim at α = .01.
Reject Ho
Reject Ha
Fail to reject Ho
Fail to reject Ha
A manufacturer claims that his tires last at least 40,000
miles. A test on 25 tires reveals that the mean life of a tire
is 39,750 miles, with a standard deviation of 387 miles.
Test the Manufacturer’s claim at α = .01.
There is enough evidence to reject the claim
There is not enough evidence to reject the claim
There is enough evidence to support the claim
There is not enough evidence to support the claim
A one sample t-test is conducted on Ho : μ = 81.6. The
sample has a sample mean = 84.1 , s = 3.1, n = 25, and α = .01.
Reject Ho
Reject Ha
Fail to reject Ho
Fail to reject Ha
A one sample t-test is conducted on Ho : μ = 81.6. The
sample has a sample mean = 84.1 , s = 3.1, n = 25, and α =
.01.
There is enough evidence to reject the claim
There is not enough evidence to reject the claim
There is enough evidence to support the claim
There is not enough evidence to support the claim
In performing a hypothesis test where the null
hypothesis is that the μ = 6.9. A random sample of 16
items is selected. The sample mean is 7.1 and the sample
standard deviation is 2.4. It can be assumed that the
population is normally distributed at α = .05.
Reject Ho
Reject Ha
Fail to reject Ho
Fail to reject Ha
In performing a hypothesis test where the null
hypothesis is that the μ = 6.9. A random sample of 16
items is selected. The sample mean is 7.1 and the sample
standard deviation is 2.4. It can be assumed that the
population is normally distributed at α = .05.
There is enough evidence to reject the claim
There is not enough evidence to reject the claim
There is enough evidence to support the claim
There is not enough evidence to support the claim
A fast food outlet claims that the mean waiting time in
line is less than 1.9 minutes. A random sample of 20
customers has a mean of 1.7 minutes with a standard
deviation of 0.8 minute. If α = 0.05, test the fast food
outlet's claim using P-values.
Reject Ho
Reject Ha
Fail to reject Ho
Fail to reject Ha
A fast food outlet claims that the mean waiting time in
line is less than 1.9 minutes. A random sample of 20
customers has a mean of 1.7 minutes with a standard
deviation of 0.8 minute. If α = 0.05, test the fast food
outlet's claim using P-values.
There is enough evidence to reject the claim
There is not enough evidence to reject the claim
There is enough evidence to support the claim
There is not enough evidence to support the claim
A fast food outlet claims that the mean waiting time in
line is less than 3.5 minutes. A random sample of 20
customers has a mean of 3.7 minutes with a standard
deviation of 0.8 minute. If α = 0.05, test the fast food
outlet's claim.
Reject Ho
Reject Ha
Fail to reject Ho
Fail to reject Ha
A fast food outlet claims that the mean waiting time in
line is less than 3.5 minutes. A random sample of 20
customers has a mean of 3.7 minutes with a standard
deviation of 0.8 minute. If α = 0.05, test the fast food
outlet's claim.
There is enough evidence to reject the claim
There is not enough evidence to reject the claim
There is enough evidence to support the claim
There is not enough evidence to support the claim
