The cross-tabulation data given below show the number of people who rated a customer service representative as friendly and polite based on whether the representative greeted them first. Complete parts a through d below.Friendliness/PolitenessStaff Greeting NoNoYesYes1215619a. Write the hypotheses for the chi-square test for independence.HoGreeting and Customer Service Rating are independentH₁: Greeting and Customer Service Rating are dependentb. Find the expected frequencies.Friendliness/PolitenessStaff Greeting NoYesNoGrand Total18Yes34Grand Total272552(Type integers or decimals rounded to two decimal places as needed.)

The given data is as follows: Friendliness/Politeness Staff GreetingNoYesNo 126Yes1519

Answered: The cross-tabulation data given below…

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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You want to see if it makes a difference which lane to be in when there is traffic. You randomly observe 372 cars as they pass by on the four lane freeway. The results are displayed in the table below. Use a level of significance of a = 0.01. a. Complete the rest of the table by filling in the expected frequencies: of Cars in Each Lane Frequency Outcome Frequency Expected Frequency Lane 1 89 Lane 2 98 Lane 3 92 Lane 4 93 b. What is the correct statistical test to use? Select an answer Y C. What are the null and alternative hypotheses? Ho: OThe distribution of traffic is not uniform. O The traffic and lanes are independent. O The distribution of traffic is uniform. KO The traffic and lanes are dependent. Hi : OThe distribution of traffic is uniform. OThe traffic and lanes are independent. O The traffic and lanes are dependent. O The distribution of traffic is not uniform.

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