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4. A professional employee in a large corporation receives an ave mails per day. Most of these e-mails are from other employees Because of the large number of e-mails, employees find themse are unable to concentrate when they return to their tasks. In an distraction caused by such interruptions, one company establi: that all employees were to use before sending an e-mail. One m priority list was put into place, a random sample of 32 employe were receiving an average of x= 33.3 e-mails per day. The com which the e-mails are routed showed that o = 15.4. Has the new effect? Assume the distribution is approximately normal. Use a significance to test the claim that there has been a change (eith average number of e-mails received per day per employee. a. State Ho and H1 a = Ho =33.3 H, Z 33.3 b. Identify the sampling distribution you will use: the stane student's t. Explain the rationale for your choice. (1 poir will use rhe standara we because we are told the di aproximently novmal ana we kv c. What is the value of the sample test statistic? (

4. A professional employee in a large corporation receives an ave mails per day. Most of these e-mails are from other employees Because of the large number of e-mails, employees find themse are unable to concentrate when they return to their tasks. In an distraction caused by such interruptions, one company establi: that all employees were to use before sending an e-mail. One m priority list was put into place, a random sample of 32 employe were receiving an average of x= 33.3 e-mails per day. The com which the e-mails are routed showed that o = 15.4. Has the new effect? Assume the distribution is approximately normal. Use a significance to test the claim that there has been a change (eith average number of e-mails received per day per employee. a. State Ho and H1 a = Ho =33.3 H, Z 33.3 b. Identify the sampling distribution you will use: the stane student's t. Explain the rationale for your choice. (1 poir will use rhe standara we because we are told the di aproximently novmal ana we kv c. What is the value of the sample test statistic? (

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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what is test statistic and conclusion

4. A professional employee in a large corporation receives an average of u= 40.3 e- mails per day. Most of these e-mails are from other employees in the company. Because of the large number of e-mails, employees find themselves distracted and are unable to concentrate when they return to their tasks. In an effort to reduce distraction caused by such interruptions, one company established a priority list that all employees were to use before sending an e-mail. One month after the new priority list was put into place, a random sample of 32 employees showed that they were receiving an average of x= 33.3 e-mails per day. The computer server through which the e-mails are routed showed that o = 15.4. Has the new policy had any effect? Assume the distribution is approximately normal. Use a 5% level of significance to test the claim that there has been a change (either way) in the average number of e-mails received per day per employee. a. State Ho and H1 (1 point) .05 a = Ho =33.3 Hi Z 33.3 b. Identify the sampling distribution you will use: the standard normal or the student's t. Explain the rationale for your choice. (1 point) will use rhe standard hormal are to ld the distribution is ana we know 6. we because we aproximently normal c. What is the value of the sample test statistic? (
Transcribed Image Text:4. A professional employee in a large corporation receives an average of u= 40.3 e- mails per day. Most of these e-mails are from other employees in the company. Because of the large number of e-mails, employees find themselves distracted and are unable to concentrate when they return to their tasks. In an effort to reduce distraction caused by such interruptions, one company established a priority list that all employees were to use before sending an e-mail. One month after the new priority list was put into place, a random sample of 32 employees showed that they were receiving an average of x= 33.3 e-mails per day. The computer server through which the e-mails are routed showed that o = 15.4. Has the new policy had any effect? Assume the distribution is approximately normal. Use a 5% level of significance to test the claim that there has been a change (either way) in the average number of e-mails received per day per employee. a. State Ho and H1 (1 point) .05 a = Ho =33.3 Hi Z 33.3 b. Identify the sampling distribution you will use: the standard normal or the student's t. Explain the rationale for your choice. (1 point) will use rhe standard hormal are to ld the distribution is ana we know 6. we because we aproximently normal c. What is the value of the sample test statistic? (
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