Chpt 4, Q1: what is the correct answer? When should I use the One-sample t-test?Remember that some tests, such as chi squared, can be used under various circumstances. The goal of the test changesbased on the situation. Pay attention to the specific conditions noted in parenthesis to ensure you are picking the correctgoal.More than two treatment groups where a normal distribution can be assumed.Compare categorical frequency data with an expected population proportion. No difference between observed and expected proportionsis used as the null hypothesis.Compare more than two treatment groups when a normal distribution cannot be met.Compare two treatment groups when a normal distribution cannot be assumed.Compares numerical data to a known mean. The null hypothesis is that the mean of the data equals the known mean.Compare two treatments consisting of paired data where a normal distribution can be assumed.Test the fit of the normal distribution to the data set.O Test if the median of a data set equals a null hypothesized value when the distribution of the data does not meet the assumption ofnormalacy.Compare two treatment groups consisting of paired data when the data do not fit the normal distribution.Compare two treatment groups of independent samples where the data meet the assumption that the data fit the normal distribution.Compare two treatment groups consisting of independent samples with a normal distribution AND unequal variance.Test to see if the frequency data from a population fit a discrete probability distribution.Test to compare frequency data to a specific population model

The study is about the One-sample t-test.The one sample t test is used for comparing the population mean with the given mean of the numerical data. The null hypothesis for one sample t test states that the population mean is equal to the given mean in the study. Correct Answer: Option 5. Compares numerical data to a known mean. The null hypothesis is that the mean of the data equals the known mean.