Mathematics, 24.04.2020 23:28 jdenty3398
A sociologist found that in a random sample of 50 retired men, the average number of jobs they had during their lifetimes was 7.2. The population standard deviation is 2.1.
What variable are you studying?
A. Retirement age
B. Lifetime expectancy
C. Number of jobs in a lifetime
Find the 95% confidence interval of the mean number of jobs. We are 95% confident that the true mean number of jobs is between:
A. 6.0 and 6.5
B. 6.6 and 7.8
C. 6.4 and 7.1
Answers: 1
Mathematics, 21.06.2019 14:00
When drawing a trend line for a series of data on a scatter plot, which of the following is true? a. there should be an equal number of data points on either side of the trend line. b. all the data points should lie on one side of the trend line. c. the trend line should not intersect any data point on the plot. d. the trend line must connect each data point on the plot.
Answers: 2
Mathematics, 21.06.2019 19:00
Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.
Answers: 2
Mathematics, 21.06.2019 23:00
Sam is picking fruit from a basket that contains many different kinds of fruit. which set of events is independent?
Answers: 1
A sociologist found that in a random sample of 50 retired men, the average number of jobs they had d...
Physics, 09.08.2021 23:10
Mathematics, 09.08.2021 23:10
English, 09.08.2021 23:10
Biology, 09.08.2021 23:10
Mathematics, 09.08.2021 23:10
Mathematics, 09.08.2021 23:10
Mathematics, 09.08.2021 23:10