Mathematics, 16.05.2021 01:00, azaz1819
A student researcher compares the ages of cars owned by students and cars owned by faculty at a local state college. A sample of 79 cars owned by students had an average age of 5.15 years. A sample of 118 cars owned by faculty had an average age of 7.69 years. Assume that the population standard deviation for cars owned by students is 3.54 years, while the population standard deviation for cars owned by faculty is 3.82 years. Determine the 99% confidence interval for the difference between the true mean ages for cars owned by students and faculty. Step 1 of 3 : Find the point estimate for the true difference between the population means.
Answers: 1
Mathematics, 21.06.2019 18:00, stephanielynch
Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer
Answers: 1
Mathematics, 21.06.2019 23:00, FailingstudentXD
What is the sum of the first 8 terms of the geometric series
Answers: 3
Mathematics, 22.06.2019 01:50, iiMxlissaii
Grandpa ernie is shrinking! over the past 4 years his height decreased by a total of 2.4 cm. it decreased by the same amount each year. what was the change in grandpa ernie's height each year
Answers: 2
A student researcher compares the ages of cars owned by students and cars owned by faculty at a loca...
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