Homework Help is Here – Start Your Trial Now!
Math
Statistics
A manufacturer knows that the number of items produced per hour by machine A and by machine B are normally distributed with a standard deviation of 4.5 items for machine A and a standard deviation of 6.9 items for machine B. The mean hourly amount produced by machine A for a random sample of 51 hours was 229 units; the mean hourly amount produced by machine B for a random sample of 43 hours was 215 units. Find a 99% confidence interval for the difference in mean parts produced per hour by these two machines. The confidence interval is- (Round to four decimal places as needed) (D

A manufacturer knows that the number of items produced per hour by machine A and by machine B are normally distributed with a standard deviation of 4.5 items for machine A and a standard deviation of 6.9 items for machine B. The mean hourly amount produced by machine A for a random sample of 51 hours was 229 units; the mean hourly amount produced by machine B for a random sample of 43 hours was 215 units. Find a 99% confidence interval for the difference in mean parts produced per hour by these two machines. The confidence interval is- (Round to four decimal places as needed) (D

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
See similar textbooks
icon
Related questions
Question

Typed plz and asap thanks

I want quality solution 

A manufacturer knows that the number of items produced per hour by machine A and by machine B are normally distributed with a standard deviation of 4.5 items for machine A and a standard deviation of 6.9 items for machine B. The mean hourly amount produced by machine A for a random sample of 51 hours was 229 units; the mean hourly amount produced by machine B for a random sample of 43 hours was 215 units. Find a 99% confidence interval for the difference in mean parts produced per hour by these two machines. The confidence interval is (Round to four decimal places as needed)
Transcribed Image Text:A manufacturer knows that the number of items produced per hour by machine A and by machine B are normally distributed with a standard deviation of 4.5 items for machine A and a standard deviation of 6.9 items for machine B. The mean hourly amount produced by machine A for a random sample of 51 hours was 229 units; the mean hourly amount produced by machine B for a random sample of 43 hours was 215 units. Find a 99% confidence interval for the difference in mean parts produced per hour by these two machines. The confidence interval is (Round to four decimal places as needed)
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 16 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Calculus For The Life Sciences
Calculus For The Life Sciences
Calculus
ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,
SEE MORE TEXTBOOKS