8.15 Performance-based logistics. Refer to the Journal ofBusiness Logistics (Vol. 36, 2015) study of the factors thatlead to successful performance-based logistics projects,Exercise 2.45 (p. 71). Recall that opinions of a sample ofDepartment of Defense (DOD) employees and supplierswere solicited during interviews. Data on years of experi-ence for the 6 commercial suppliers interviewed and the11 government employees interviewed are listed in theaccompanying table. Assume these samples were randomlyPBLSummary statistics:VariableObservations Minimum MaximumMeanStd. deviationExperience | CommercialExperience | Government65.000030.000012.33338.8694113.000030.000020.81829.3682t-test for two independent samples/Lower-tailed test:95% confidence interval on the difference between the means:(-Inf, -0.2951 )Difference-8.4848t (Observed value)t (Critical value)-1.8162-1.7531DF15p-value (one-tailed)alpha0.04470.05XLSTAT Output for Exercise 8.15 and independently selected from the populations of DODemployees and commercial suppliers. Consider the follow-ing claim: "On average, commercial suppliers of the DODhave less experience than government employees."Commercial:Government:30 10 915 30 30 2510 5106.3 20 25 30 20 25a. Give the null and alternative hypotheses for testing theclaim.b. An XLSTAT printout giving the test results is shown atthe bottom of the page. Find and interpret the p-valueof the test using a = .05.c. What assumptions about the data are required for theinference, part b, to be valid? Check these assumptionsgraphically using the data in the PBL file.

a) From the output, the test hypotheses are given below: In this case, population 1 represents…

Answered: a. Give the null and alternative…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In each graph, the shaded region represents the P-value of a hypothesis test. Find the P-value, given that the Standardized Test Statistic is Z = - 1.1. Round to 4 decimals a. -4 -3 -2 -1 3 4 b. -4 -3 -2 -1 1 1 3. Submit Question MacBook Air 2.
What is the p-value?
3) Examine your t-test score in the paired samples t-test table. Is the p value significant? State in one to two sentences whether the test was significant and interpret this result.
Can someone help me with this please? Freshmen and Seniors For this assignment, you will conduct a two-sample t-test to determine if college freshmen and seniors have a significantly different number of speeding tickets. Using the data provided below, conduct a two-sample t-test. Speeding Tickets for Freshmen and Seniors Freshmen 2 1 4 2 5 1 0 2 4 2 Seniors 1 2 1 1 0 2 1 0 1 2 Then, create a summary of 1-2 paragraphs in which you address the following: • Present the result of the two-sample t-test. • Explain whether or not the result is statistically significant. • Discuss what this implies for freshmen and seniors, and whether or not the results fit with your own expectations.
Men Women H2 A study was done on body temperatures of men and women. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. 11 97.67°F 0.91°F 59 97.35°F 0.73°F a. Use a 0.05 significance level to test the claim that men have a higher mean body temperature than women. What are the null and alternative hypotheses? OB. Ho H =H2 O A. Ho 4, 2H2 H: 1
answer all question
[2] Instruction: Draw a conclusion by analyzing the given sets of data using the z test. Use the 7 steps below in answering a word problem in inferential statistics. (Type the answers with solution, NOT HANDWRITTEN + Please put a label with "step #" on every solution). Note (1): pls refer for the format in the photo below and few example on how to answer each steps. Note (2): pls refer for the problem on the next photo
The mean price of mid-sized cars in a region is $57,600. A test is conducted to see if the claim is true. Identify the null hypothesis. ? v? v Identify the alternative hypothesis. ? v:?v| ? v Identify the type I error. O You decide that the mean price of mid-sized cars is not $57,600, when the mean price of mid- sized cars actually is $57,600. O You decide that the mean price of mid-sized cars is $57,600, when the mean price of mid- sized cars actually is not $57,600. O You decide that the mean price of mid-sized cars is not $57,600, when the mean price of mid- sized cars actually is nor $57,600. O You decide that the mean price of mid-sized cars is $57,600, when the mean price of mid- sized cars actually is $57,600. Identify the type II error. O You decide that the mean price of mid-sized cars is not $57,600, when the mean price of mid- sized cars actually is $57,600. O You decide that the mean price of mid-sized cars is $57,600, when the mean price of mid- sized cars actually is not…
write down the hypothesis test for checking the following: 1. whether the mean is different from 2 2. whether the mean is less than the value of 5
Use technology to find the P-value for the hypothesis test described below. The claim is that for a smartphone carrier's data speeds at airports, the mean is u = 16.00 Mbps. The sample size is n = 20 and the test statistic is t = 1.776.
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