Mathematics, 19.03.2020 17:18 cadez
It is estimated that the average test score for a statistics exam will be u = 70, with a variance of o2 = 12. In a random sample of 8 students, the test scores are 65, 73, 74, 68, 70, 74, 69, 71, giving us the sample statistics i = 70.5 and s? = 10. Assume a normal distribution of scores. Answer the following questions to determine if you would agree with the assumption of o2 or not.
(a) Use the sampling distribution of S2 to find the value of x2 corresponding to what is seen in the data, and our assumption about the population variance. Round your answer to 3 decimals.
(b) Find Xô.975 (df), where df is the degrees of freedom value corresponding to the statistic from Part 7a.
(c) Find Xô.025 (df), where df is the degrees of freedom value corresponding to the statistic from Part 7a.
(d) Would you agree with our assumption that the population variance is o2 = 12? Why or why not?
Answers: 2
Mathematics, 21.06.2019 15:30
Data was collected on myrtle beach for 11 consecutive days. each day the temperature and number of visitors was noted. the scatter plot below represents this data. how many people visited the beach when the temperature was 84 degrees?
Answers: 1
Mathematics, 21.06.2019 20:00
Select the number of ways in which a line and a circle can intersect
Answers: 3
Mathematics, 21.06.2019 21:00
Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?
Answers: 2
It is estimated that the average test score for a statistics exam will be u = 70, with a variance of...
Biology, 31.08.2019 03:30
Spanish, 31.08.2019 03:30
Social Studies, 31.08.2019 03:30
Biology, 31.08.2019 03:30
Mathematics, 31.08.2019 03:30
Social Studies, 31.08.2019 03:30
Biology, 31.08.2019 03:30