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Ten employees were selected at random, and the data on the number of customers per month were recorded before and after the selected employees attending the workshop. The data were collected and analyzed using SPSS. The results as follow. Paired Samples Test Paired Differences 95% Confidence Interval of Std. Std. Error the Difference Mean Deviation Pair 1 Before - After 2.70000 3.71334| Mean Lower Upper df 1.17426 _04364 5.35636 2.299 Assuming the number of customers is normally distributed. a) The manager decided to analyze the data using Paired Samples Test. Give a reason to support his decision to use this statistical analysis. b) Show the value of t-statistic using appropriate formula. c) Can the insurance manager conclude that the workshop has increased the number of customers? Use a=0.10.

Ten employees were selected at random, and the data on the number of customers per month were recorded before and after the selected employees attending the workshop. The data were collected and analyzed using SPSS. The results as follow. Paired Samples Test Paired Differences 95% Confidence Interval of Std. Std. Error the Difference Mean Deviation Pair 1 Before - After 2.70000 3.71334| Mean Lower Upper df 1.17426 _04364 5.35636 2.299 Assuming the number of customers is normally distributed. a) The manager decided to analyze the data using Paired Samples Test. Give a reason to support his decision to use this statistical analysis. b) Show the value of t-statistic using appropriate formula. c) Can the insurance manager conclude that the workshop has increased the number of customers? Use a=0.10.

MATLAB: An Introduction with Applications
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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Ten employees were selected at random, and the data on the number of customers per month were recorded before and after the selected employees attending the workshop. The data were collected and analyzed using SPSS. The results as follow. Paired Samples Test Paired Differences 95% Confidence Interval of Std. Std. Error the Difference Mean Deviation Mean Lower Upper t df Pair 1 Before - After 2.70000 3.71334 1.17426 04364 5.35636 2.299 9. Assuming the number of customers is normally distributed. a) The manager decided to analyze the data using Paired Samples Test. Give a reason to support his decision to use this statistical analysis. b) Show the value of t-statistic using appropriate formula. c) Can the insurance manager conclude that the workshop has increased the number of customers? Use a=0.10.
Transcribed Image Text:Ten employees were selected at random, and the data on the number of customers per month were recorded before and after the selected employees attending the workshop. The data were collected and analyzed using SPSS. The results as follow. Paired Samples Test Paired Differences 95% Confidence Interval of Std. Std. Error the Difference Mean Deviation Mean Lower Upper t df Pair 1 Before - After 2.70000 3.71334 1.17426 04364 5.35636 2.299 9. Assuming the number of customers is normally distributed. a) The manager decided to analyze the data using Paired Samples Test. Give a reason to support his decision to use this statistical analysis. b) Show the value of t-statistic using appropriate formula. c) Can the insurance manager conclude that the workshop has increased the number of customers? Use a=0.10.
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