Question

If I want to compare the performance of a particular group to an established, accepted average but information about the population standard deviation is not available. I should

Select one:
a. conduct a one-sample t-test.
b. conduct a one-sample z-test.
c. conclude that this cannot be done.
d. conduct a correlated t -test.

Answer 1

Answer:

b.conduct a one -sample z-test

Hope its help you!!

Answer 2

The correct answer is option (a). conduct a one-sample t-test.

• The one-sample t-test is used to determine whether the mean of an unknown population is different from a specific value.
• It is typically used to determine whether a given sample comes from a specific population when full population information is unavailable.
• Different types of hypothesis testing include the t-test, correlated t-test, and the z-test.
• When information about the entire population is available, the one-sample z-test is used to determine if the sample originates from a specific population.
• A correlated t-test, also known as a dependent/paired t-test, determines whether there exists a significant difference between the two groups by comparing the means and standard deviations of two related groups.

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