subject
Mathematics, 14.05.2021 05:20 gottapass62

A UW Madison professor is interested in learning about the variance of grades for university students. The professor gathers the sample variance for a random sample of 50 students. From past experience, the professor knows that the population of students is normally distributed. The sample variance that is collected is equal to 80. The professor would like to infer at the 1% significance level that the population variance is less than 100. a. State the appropriate null and alternative hypothesis.
b. What is the correct test statistic?
c. What is the conclusion of the test?
d. What would be the effect if the professor increased the sample size?

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 21.06.2019 13:40
Classify the following triangle check all that apply
Answers: 1
question
Mathematics, 21.06.2019 15:30
What is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.
Answers: 2
question
Mathematics, 21.06.2019 22:00
Complete the steps to find 4.830 ÷ 5
Answers: 2
question
Mathematics, 22.06.2019 01:00
Michael split a rope that was 28 inches long into 5 equal parts. brenden split a rope that was 30 inches long into 6 equal parts. which boy's rope was cut into longer pieces?
Answers: 1
You know the right answer?
A UW Madison professor is interested in learning about the variance of grades for university student...
Questions
question
Geography, 28.01.2020 18:09
question
Mathematics, 28.01.2020 18:09