Mathematics, 15.04.2020 21:49 lesli8178
Fifty students are enrolled in an Economics class. After the first examination, a random sample of five papers was selected. The grades were 60, 70, 75, 80, 90.
a. Calculate the estimate of the standard error of the mean.
b. What assumption must be made before we can determine an interval for the mean grade of all the students in the class? Explain why?
c. Assume the assumption of part(b) is met. Provide a 90% confidence interval for the mean grade of all the students in the class.
d. If there were 200 students in the class, what would be the 90% confidence interval for the mean grade of all the students in the class
Answers: 3
Mathematics, 21.06.2019 17:00
Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?
Answers: 1
Mathematics, 21.06.2019 22:10
Ellen makes and sells bookmarks. she graphs the number of bookmarks sold compared to the total money earned. why is the rate of change for the function graphed to the left?
Answers: 1
Mathematics, 21.06.2019 23:40
From the top of a tree a bird looks down on a field mouse at an angle of depression of 50°. if the field mouse is 40 meters from the base of the tree, find the vertical distance from the ground to the bird's eyes.
Answers: 1
Fifty students are enrolled in an Economics class. After the first examination, a random sample of f...
Physics, 28.10.2020 06:30
English, 28.10.2020 06:30
English, 28.10.2020 06:30
History, 28.10.2020 06:30
English, 28.10.2020 06:30
English, 28.10.2020 06:30
Mathematics, 28.10.2020 06:30
History, 28.10.2020 06:30
Mathematics, 28.10.2020 06:30
Mathematics, 28.10.2020 06:30