Mathematics, 20.11.2020 21:10 zamawi17
How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20°F to 45°F. A random sample of prices ($) for sleeping bags in this temperature range is given below. Assume that the population of x values has an approximately normal distribution.
115 85 120 95 55 85 30 23 100 110
105 95 105 60 110 120 95 90 60 70
A button hyperlink to the SALT program that reads: Use SALT.
(a)
Use a calculator with mean and sample standard deviation keys to find the sample mean price x and sample standard deviation s. (Round your answers to four decimal places.)
x = $
86.4
Correct: Your answer is correct.
s = $
28.24218569
Correct: Your answer is correct.
(b)
Using the given data as representative of the population of prices of all summer sleeping bags, find a 90% confidence interval for the mean price μ of all summer sleeping bags. (Round your answers to two decimal places.)
lower limit $
upper limit $
Answers: 2
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Mathematics, 21.06.2019 15:30
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Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8 feet of ribbon. he cut off one piece that was 3 5/8 feet long and another piece that was 1 1/4 feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.
Answers: 1
How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in te...
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