Mathematics, 30.10.2020 08:40 rome58
The mean useful life of car batteries is 48 months. They have a standard deviation of 3. Assume the useful life of batteries is normally distributed. a. Calculate the percent of batteries with a useful life of less than 45 months. (Round your answer to the nearest tenth percent.) b. Calculate the percent of batteries that will last longer than 54 months. (Round your answer to the nearest tenth percent.)
Answers: 2
Mathematics, 21.06.2019 15:00
The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?
Answers: 3
Mathematics, 21.06.2019 19:30
Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin
Answers: 1
Mathematics, 21.06.2019 20:30
Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints
Answers: 1
The mean useful life of car batteries is 48 months. They have a standard deviation of 3. Assume the...
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