A particular state university system has 7 campuses. On each campus, a random sample of students will be selected, and each student will be categorized with respect to political philosophy as liberal, moderate, or conservative. The null hypothesis of interest is that the proportion of students falling in these three categories is the same at all 7 campuses.(a) On how many degrees of freedom will the resulting test 𝜒2 be based?

explain the following concepts Test of significance, degree of freedom, Hypothesis Testing

A random sample of 10 observations is selected from a normal population with an unknown standard deviation. To conduct a test of hypothesis about the population mean the appropriate degrees of freedom isQuestion 3Select one:a.10b.None of the abovec.11d.9Clear my choice

A student believes that the average grade on the quiz in Math is greater than 85. She plans on taking a sample to test her belief. The correct null hypothesis is Group of answer choicesPopulation mean is greater than or equal to 85Population mean is less than or equal to 85Population mean is less than 85Population mean is greater than 85

A researcher is interested in student characteristics based on their degree programme. As part of her study, she investigates whether psychology and maths students are equally likely to have been to a bar over the previous weekend. Her survey provides the frequency of going to a bar or not going to a bar for a sample of 90 psychology students and 90 maths students. What type of test can she carry out on the data?Question 8Answera.Chi-Square Testb.McNemar Testc.Independent Sample T-Testd.Pearson's correlation

Calculate the degrees of freedom, the test statistic, and the P-value for a test of 𝐻0 : 𝜇=0.295, against 𝐻𝑎:𝜇≠0.295𝐻𝑎 : 𝜇≠0.295. Assume the requirements are satisfied. Input your answers in the next 3 questions. Input the degrees of freedom.