Mathematics, 03.07.2020 21:01, bfer11
Insurance companies track life expectancy information to assist in determining the cost of life insurance policies. AIB Insurance randomly sampled 100 recently paid policies and determined the average age of clients in this sample to be 77.7 years with a standard deviation of 3.6. The 90% confidence interval for the true mean age of its life insurance policy holders is
A. (76.87, 80.33)
B. (72.5, 82.9)
C. (77.1, 78.3)
D. (74.1, 81.3)
E. (74.5, 80)
Answers: 2
Mathematics, 21.06.2019 14:00, kah36
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 17:30, alexandroperez13
Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?
Answers: 2
Mathematics, 21.06.2019 20:00, lucerogon7403
How can you construct perpendicular lines and prove theorems about perpendicular lines
Answers: 3
Insurance companies track life expectancy information to assist in determining the cost of life insu...
Mathematics, 26.02.2020 23:23