Oven thermostats were tested by setting them to 250 °C and measuring the actual temperature of the oven. In a sample of 67 thermostats, the average temperature was 248.2 °C. Assume the population standard deviation is 5.1 °C. i) Find the 90% confidence interval for the mean oven temperature in °F, wherein F=1.8C + 32. What is the confidence level of the interval (475 °F, 480 °F)? іїї) A 90% confidence interval for the mean temperature is (473 °F, 482 °F). The following statement is True or false? "The probability that the mean temperature is between 473 °F and 482 °F is 90%". Justify your answer
Oven thermostats were tested by setting them to 250 °C and measuring the actual temperature of the oven. In a sample of 67 thermostats, the average temperature was 248.2 °C. Assume the population standard deviation is 5.1 °C. i) Find the 90% confidence interval for the mean oven temperature in °F, wherein F=1.8C + 32. What is the confidence level of the interval (475 °F, 480 °F)? іїї) A 90% confidence interval for the mean temperature is (473 °F, 482 °F). The following statement is True or false? "The probability that the mean temperature is between 473 °F and 482 °F is 90%". Justify your answer
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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Oven thermostats were tested by setting them to 250 °C and measuring the actual temperature of the oven. In a sample of 67 thermostats, the average temperature was 248.2 °C. Assume the population standard deviation is 5.1 °C.
i)
Find the 90% confidence interval for the
What is the confidence level of the interval (475 °F, 480 °F)?
іїї)
A 90% confidence interval for the mean temperature is (473 °F, 482 °F). The following statement is True or false? "The probability that the mean temperature is between 473 °F and 482 °F is 90%". Justify your answer
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