Te professor of a large calculus class randomly selected 6 students and asked the amount of time (in hours) spent for his course per week. te data are given below. 10 8 9 7 11 13
a. estimate the mean of the time spent in a week for this course by the students who are taking this course.
b. estimate the standard deviation of the time spent in a week for this course by the students who are taking this course.
c. estimate the standard error of the estimated mean time spent in a week for this course by the students who are taking this course.

a. μ = 9.667 hours

b. σ = 1.972 hours

c. SE = 0.805 hours

Step-by-step explanation:

Sample size (n) = 6

Sample data (xi) = 10, 8, 9, 7, 11, 13

a. Mean time spent in a week for this course by students:

Sample mean is given by:

Mean time spent in a week per student is 9.667 hours

b. Standard deviation of the time spent in a week for this course by students:

Standard deviation is given by:

c. Standard error of the estimated mean time spent in a week for this course by students:

Standard error is given by:

sorry, i don't know i just need points, i'm new here. chao