Mathematics, 07.04.2020 17:52 vc0620120
The lengths of text messages are normally distributed with a population standard deviation of 3 characters and an unknown population mean. If a random sample of 24 text messages i taken and results in a sample mean of 27 characters, find a 99% confidence interval for the population mean. Zo.10Z0.0520.025 Zo.01 Z0.005 1.282 1.645 1.960 2.326 2.576 You may use a calculator or the common z values above. Select the correct answer below: a.(26.21,27.79) b.(25.99.28.01) c.(25.93,28.07)
Answers: 3
Mathematics, 22.06.2019 00:30
Julie begins counting backwards from 1000 by 2’s and at the same time tony begins counting forward from 100 by 3’s. if they count at the same rate, what number will they say at the same time?
Answers: 1
Mathematics, 22.06.2019 03:30
Calculate the mean value (expected value) of the following discrete variable x (10 points): x = 0, 1, 2, 3, 4, 5, 6 p(x) = 0.2, 0.2, 0.15, 0.15, 0.15, 0.1, 0.05
Answers: 1
The lengths of text messages are normally distributed with a population standard deviation of 3 char...
Mathematics, 05.05.2021 17:10
History, 05.05.2021 17:10
Health, 05.05.2021 17:10
Mathematics, 05.05.2021 17:10
English, 05.05.2021 17:10
Mathematics, 05.05.2021 17:10