Question

In: Statistics and Probability

Over then past 5 years, the mean time for a warehouse to fill a buyer’s order...

Over then past 5 years, the mean time for a warehouse to fill a buyer’s order has been 25 minutes. Officials of the company believe that the length of time has increased recently, either due to a change in the workforce or due to a change in customer purchasing policies. The processing time (in minutes) was recorded for a random sample of 15 orders processed over the past month.

28 25 27 31 10 26 30 15 55 12 24 32 28 42 38

Questions:
(a). Please check the normality of the data.
(b). Please test the research hypothesis at the significance level α = 0.05.

Solutions

Expert Solution

orchestra answered 2 years ago
Next > < Previous

Related Solutions

Solve it by R Over the past 5 years, the mean time for a warehouse to...
Solve it by R Over the past 5 years, the mean time for a warehouse to fill a buyer’s order has been 25 minutes. Officials of the company believe that the length of time has increased recently, either due to a change in the workforce or due to a change in customer purchasing policies. The processing time (in minutes) was recorded for a random sample of 15 orders processed over the past month. 28 25 27 31 10 26 30...
It is the question from ECON 262 Over the past 5 years, the average time to...
It is the question from ECON 262 Over the past 5 years, the average time to resolve customer complaints at a large local retailer has been 3.25 days. Management feels the mean time is too long, which probably results in decreased competitiveness. The retailer has recently instituted a new complaint processing procedure and has tested the procedure on 20 customer complaints. The results of the tests are shown below. The values given are the number of days required to process...
A. Explain what has happened to the value of Dollar over the past 5 years.
A. Explain what has happened to the value of Dollar over the past 5 years.In relation to the currency in China, to the Euro, to the currency in India, and the Canadian dollar.B. Analyze results in Part A. Why do you think it went or down in value versus different currencies?
a company has accumulated statistics over the past years to determine the average waiting time (in...
a company has accumulated statistics over the past years to determine the average waiting time (in minutes) on major bus routes depending on the time of day. Here are the statistics observed: Waiting time conditional upon period of the day Wait<5 (A) 5 ≤ ???? ≤ 15 (B) wait≥ 15 (C) Rush hour(R) 64% 32% 4% Midday(M) 20% 65% 15% Evenings(E) 10% 60% 30% Distribution of the users Proportion of total users Rush Hours(R) 70% Midday(M) 25% Evenings(E) 5% A)(1...
The mean annual inflation rate in the United States over the past 98 years is 3.37%...
The mean annual inflation rate in the United States over the past 98 years is 3.37% and has a standard deviation of approximately 5%. In 2018, the inflation rate was below 1.9%. If the annual inflation rate is normally distributed, what is the probability that inflation rate will be below 1.9% in 2019?
The company has been growing steadily over the past 5 years, and the financials and future...
The company has been growing steadily over the past 5 years, and the financials and future prospects look good. Your CEO has asked you to run the numbers. After doing some digging into the business, you have gathered information on the following: • The estimated purchase price for the equipment required to move the operation in-house would be $750,000. Additional net working capital to support production (in the form of cash used in Inventory, AR net of AP) would be...
The company has been growing steadily over the past 5 years, and the financials and future...
The company has been growing steadily over the past 5 years, and the financials and future prospects look good. Your CEO has asked you to run the numbers. After doing some digging into the business, you have gathered information on the following: The estimated purchase price for the equipment required to move the operation in-house would be $750,000. Additional net working capital to support production (in the form of cash used in Inventory, AR net of AP) would be needed...
The company has been growing steadily over the past 5 years, and the financials and future...
The company has been growing steadily over the past 5 years, and the financials and future prospects look good. Your CEO has asked you to run the numbers. After doing some digging into the business, you have gathered information on the following: The estimated purchase price for the equipment required to move the operation in-house would be $750,000. Additional net working capital to support production (in the form of cash used in Inventory, AR net of AP) would be needed...
Explain how the Trinidad and Tobago economy fell into a depression over the past 5 years....
Explain how the Trinidad and Tobago economy fell into a depression over the past 5 years. ( exclude the effects of the current pandemic )
Over the past four years, a stock produced returns of 13, 6, -5, and 18 percent,...
Over the past four years, a stock produced returns of 13, 6, -5, and 18 percent, respectively. What is the standard deviation of these returns? What would be the standard deviation of these returns if they were exactly twice the return shown for each year? please show your work.
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT