47 Wesley McLaughlin Busn210Test04

47 Wesley McLaughlin Busn210Test04 -...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
a7f88f7249d29d017741cf64f9b061b83d877dc0.xls # Question Answer Your Answer Comments Possible Score Your Score 1 because sigma is not known 2 2 2 2 2.58348718527599000 2.58348718527599000 2.5 2.5 12.5317535851 12.5317535851 2.5 2.5 72.5317535851 47.4682464149 2.5 0 47.4682464149 72.5317535851 2.5 0 Yes Yes 2.5 2.5 2 53.00 20 3.5 0 3 1.459341439660030000000 1.459341439660030000000 2.5 2.5 2.5 2.5 9.165151389911680000000 2.000000000000000000000 2.5 0 In the green cell to the right state the conclusion: 2.5 2.5 4 1.644853626951470000000 1.959963984540050000000 2.5 0 2.5 2.5 3.400153308897330000000 3.400153308897330000000 2.5 2.5 In the green cell to the right, state the conclusion: 2.5 2.5 5 -1.554773594596850000000 1.554773594596850000000 2.5 0 2.5 2.5 -5.585280876853690000000 -5.585280876853690000000 2.5 2.5 2.5 2.5 Total 50 34 The American Sugar Producers Association wants to estimate the mean yearly sugar consumption. A recent sample of people revealed the mean yearly consumption to be 60 pounds with a standard deviation of 20 pounds. In the green cell to the right, explain why we need to use the t-distribution The population standard deviation is not known therefore we must use the t- distribution. In the green cell to the right, answer the following question: What assumption do we need to make before we can use the t-distribution? we must assume that the pop is normally distributed That the population is normal or nearly normal bell shaped. For a 98.00% confidence interval, what is the value of t (the positive t)?, Calculate your t value in the green cell to the right = t ==> Calculate your Margin of error value in the green cell to the right ==> Calculate your Upper Limit value in the green cell to the right ==> Calculate your Lower Limit value in the green cell to the right ==> Would it be reasonable to conclude that the population mean is 70 pounds? Select your answer from the drop-down arrow in the green cell to the right ==> A processor of carrots cuts the green top off each carrot, washes the carrots, and inserts six to a package. Twenty packages are inserted in a box for shipment. To test the weight of the boxes, a few were checked. The mean weight was 20.4 pounds and the standard deviation was 0.5 pounds. In the green cell to the right calculate the sample size ==> The latest advertisement for Nifty Lube claimed that it can change the oil on a typical auto in 15 minutes. The National Business Bureau received complaints that the actual time was longer. The Bureau had service done on 21 unmarked cars. The sample mean, the sample standard deviation and the alpha are listed below. Can we conclude that the mean wait time is more than 15 minutes? In the green cell to the right calculate t (critical value) = In the green cell to the right state the Decision Rule: If our calculated test statistic is greater than 1.4593, we reject H0 and accept H1 , otherwise we fail to reject H0. If our calculated test statistic
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 7

47 Wesley McLaughlin Busn210Test04 -...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online