A chemical engineer for a tire manufacturer is investigating tire life for a new rubber compound andhas built 15 tires and tested them to end-of-life in a road test. The sample mean and standarddeviation are i = 60,139.7 ands = 3645.94 kilometers. Find a 99% confidence interval on the meantire life. Which t-distribution curve applies on the 99% confidence interval? Include your solution.O a. 57,336 sH S 62,914O d. 57,337 Su S 62,942t-2.947O b. NONEO. 57,337 sH S 62,94

Answered: Image /qna-images/answer/ed31407e-1f64-4bb5-ba80-79c6ad3612e9.jpg

Answered: has built 15 tires and tested them to…

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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A California lake has been stocked with rainbow trout. These trout have an average length of 24 inches, with a standard deviation of 3 inches. Someone goes fishing and catches a trout that is 26.25 inches long. Express the length of this trout in standard units, relative to all the trout that were used to stock the lake. Choose the answer below that is closest.
Give me detailed and accurate solution
One year, the mean age of an inmate on death row was 41.6 years. A sociologist wondered whether the mean age of a death-row inmate has changed since then. She randomly selects 32 death-row inmates and finds that their mean age is 40.9, with a standard deviation of 9.6. Construct a 95% confidence interval about the mean age. What does the interval imply? E Click the icon to view the table of critical t-values. Choose the correct hypotheses. Họ: H 41.6 H1: u 41.6 (Type integers or decimals. Do not round.) Construct a 95% confidence interval about the mean age. With 95% confidence, the mean age of a death row inmate is between years and years. (Round to two decimal places as needed.)
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The police reported that the average driver exceeds the 50 miles per hour speed limit by more than 9 miles per hour on the busiest street in a small town. A sample of 63 randomly selected cars were clocked by airplane radar. The average speed was 57.5 miles per hour, and the standard deviation of the speeds was 4.17 miles per hour. Determine if the average speed is greater than what the police department reported. Which parameter(s) are you given? Mark all that apply. p μ σ none Which statistic(s) are you given? Mark all that apply. ¯x ˆp ˆq s x none What is the problem asking you to do? Estimate a parameter Test a given parameter
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a sugar company packages sugar in 5kg bags. the amount of sugar per bag varies according to a normal distribution. a sample of 25 bags is selected from the days production and the mean for the day is 4.98 kg and the standard deviation is 0.05 kg. ( use 1-a= 0.95 ) the margin of error for the amount of sugar is?
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