Mathematics, 29.10.2019 21:31, kimryan520
Acompany employs two shifts of workers. each shift produces a type of gasket where the thickness is the critical dimension. the average thickness and the standard deviation of thickness for shift 1, based on a random sample of 38 gaskets, are 10.86 mm and 0.14 mm. the similar figures for shift 2, based on a random sample of 35 gaskets, are 10.88 mm and 0.17 mm. let μ1 — μ2 be the mean difference in thickness between shifts 1 and 2. part a) find a 95% confidence interval for µ1-µ2.
part b) based on your answer to part a, are you convinced that the gaskets from
shift 2 are, on average, wider than those from shift 1? why or why not?
part c) how would your answers to parts a and b change if the sample sizes
were instead 300 and 250?
Answers: 2
Mathematics, 22.06.2019 00:30, kitttimothy55
On her first stroke, maya hit a golf ball 146 yards, 2 feet, 11 inches. on her second stroke, she hit it 163 yards, 1 foot, 2 inches. how far did the ball go all together? convert the answer to larger units whenever possible.
Answers: 2
Mathematics, 22.06.2019 01:00, jtgarner402
The computer that controls a bank's automatic teller machine crashes a mean of 0.6 times per day. what is the probability that, in any seven-day week, the computer will crash less than 5 times? round your answer to four decimal places
Answers: 2
Acompany employs two shifts of workers. each shift produces a type of gasket where the thickness is...
Mathematics, 06.04.2020 02:26
Mathematics, 06.04.2020 02:26
Mathematics, 06.04.2020 02:26