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 greetedthem first Complete parts a through d below.Staff Greeting No1113NoYesFriendliness/PolitenessYes720a. Write the hypotheses for the chi-square test for independenceHoGreeting and Customer Service Rating are independentH₂ Greeting and Customer Service Rating are dependentb. Find the expected frequenciesStaff Greeting NoNoFriendliness/PolitenessYesGrand Total18ORTOR Friendliness/PolitenessYesStaff Greeting NoGrand TotalNo18Yes33Grand Total 242751(Type integers or decimals rounded to two decimal places as needed.)c. Compute the chi-square statistic./Tung an integer or decimal rounded to hun decimal places a nondod 1Show Transcribed TextThe cross-tabulation data given below show the number of people who rated a customer service representative as friendly and polite based on whether the reprthem first. Complete parts a through d belowFriendliness/PolitenessYesStaff Greeting NoNo11Yes1320S(Round to three decimal places as needed)Find the p-valuep-value(Round to three decimal places as needed)DThe test statisticITIconclude that Greeting and Customer Service Rating arethe critical value, and the p-value is4the chosen level of significance 001 Therefore,the null hypo

The question is about categorical data analysis Given : To find : a ) Null and alt. hypo. b )…

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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The data in the table to the right are based on the results of a survey comparing the commute time of adults to their score on a well-being test. Complete parts (a) through (d) below. Click the icon to view the critical values for the correlation coefficient. Score 70+ r= 60- (a) Which variable is likely the explanatory variable and which is the response variable? A. The explanatory variable is commute time and the response variable is the well-being score because commute time affects the well-being score. B. The explanatory variable is commute time and the response variable is the well-being score because well-being score affects the commute time score. C. The explanatory variable is the well-being score and the response variable is commute time because commute time affects the well-being score. D. The explanatory variable is the well-being score and the response variable is commute time because well-being score affects the commute time. (b) Draw a scatter diagram of the data. Which…
A study was conducted to examine the impact of speaking in public on college students. A class of 15 statistics students participated in the study. At the beginning of a lecture the students recorded their systolic blood pressure. During the lecture the instructor called on each student to stand and answer questions about topics in the lecture. After speaking the students once again recorded their blood pressure. The resulting values are given below along with summary statistics. before 100 123 128 125 136 108 130 113 105 136 146 138 108 149 132 after 141 142 146 136 144 111 132 114 103 133 140 130 100 133 113 difference -41 -19 -18 -11 -8 -3 -2 -1 2 3 6 8 8 16 19 before after difference mean 125.1 127.9 -2.733 st dev 15.26 15.45 15.23 Does this information indicate that blood pressure increased because of speaking? Conduct an appropriate hypothesis test and show appropriate steps. Let μ1 mean systolic blood pressure before speaking in public, and μ2 mean…
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Which of these gives the best measure of central tendency for the given data? A. Mean B. Median C. Mode D. Cannot be determined
The following box plot represents a sample of house prices. House prices ($1000s) 160 Find and interpret the first quartile Q1. 155 Ex: 19000 150 Pick 145 Pick 25% of the house prices fall above Q1. Find al 25% of the house prices fall below Q1. Q1 is the median value. 140 135 Pick 130 125 120
Which of these is an advantage of using a transformed score when reporting the score of an individual case? a. Transformed scores will allow the mean score to be reported. b. Transformed scores will be reported on the nominal level. c. Transformed scores provide a context for the individual's score d. Transformed scores provide a measure of variability.
What kind of analysis involves discussing the center of the data in a sample (e.g., the mean or median) and how the data is spread out? A Discrete B Descriptive Inferential D Qualitative E Continuous
Please assist and answer questions a, b, c, d, e, f Thank you.
Use the properties of the mean and median to determine which are the correct mean and median for the following histogram. Relative Frequency 0.30 0.25 0.20- 0.15 0.10- 0.05- 0 Choose the correct answer. O Mean is 4.2 and median is 4.5. O Mean is 5.1 and median is 2.1. O Mean is 2.4 and median is 2.6. O Mean is 4.1 and median is 4.6.
Find the va'ue of mean , mode and median from the data given helow: Weight (in kg.) No. of students 93 -97 98 -102 103–107 108-112 113-117 118 --122 123 127 128- 132 3 5 12 17 14 3
A study was conducted about the number of miles
Listed below are amounts of bills for dinner and the amounts of the tips that were left. Construct a scatterplot, find the value of the linear correlation coefficient r, and find the P-value of r. Determine whether there is sufficient evidence to support a claim of linear correlation between the two variables. Use a significance level of a = 0.05. If everyone were to tip with the same percentage, what should be the value of r? Bill (dollars) Tip (dollars) 69 Construct a scatterplot. Choose the correct graph below. O A. 25- 04 30 1.6 Bill Amount (S) 30.39 49.64 84.71 94.16 62.06 101.95 6.07 8.67 11.03 12.99 9.31 13.46 120 Q ✔ The linear correlation coefficient is r= (Round to three decimal places as needed.) Determine the null and alternative hypotheses. Ho: P H₁: p (Type integers or decimals. Do not round.) The test statistic is t = (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.) Because the P-value of the linear correlation…

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