Mathematics, 03.12.2019 00:31, brennarfa
Executives of a supermarket chain are interested in the amount of time that customers spend in the stores during shopping trips. the executives hire a statistical consultant and ask her to determine the mean shopping time, u , of customers at the supermarkets. the consultant will collect a random sample of shopping times at the supermarkets and use the mean of these shopping times to estimate .u. assuming that the standard deviation of the population of shopping times at the supermarkets is 26 minutes, what is the minimum sample size she must collect in order for her to be95% confident that her estimate is within 3 minutes of. u?
carry your intermediate computations to at least three decimal places.
write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements).
Answers: 1
Mathematics, 21.06.2019 16:00, ljcervantes4824
Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.
Answers: 2
Mathematics, 21.06.2019 19:00, karellopez96
List the sides of δrst in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12
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Mathematics, 21.06.2019 21:00, SiegeHatake4534
Rewrite the following quadratic functions in intercept or factored form. show your work. y = x^2 + 7x + 10
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Mathematics, 21.06.2019 22:30, edgartorres5123
What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.
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Executives of a supermarket chain are interested in the amount of time that customers spend in the s...
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