Homework: Ch6 Assignment6 (50quez, 92pts) (su14) Score: 0 of 2 pts 6.2.39 Save H

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Homework: Ch6 Assignment6 (50quez, 92pts) (su14) Score: 0 of 2 pts 6.2.39 Save Hw Score: 48.91 %, 45 of 92 pts Question Help * are normally distributed with a mean of 0° and standard deviation of 1.00°C. Assume 2.3% of the thermometers are reeted because they have readings that are too hi h and another 23% are re eded because they have readings tat are too low. Draw a sketch and find the two readings that are cutoff values separating the rejected thermometers from the others. OB. O C. O D. a Libr Tutor The cutoff values are degrees (Use a comma to separate answers as needed. Round to two decimal places as needed.) e Ed Pa Enter your answer in the answer box and then click Check Answer 23

Explanation / Answer

The appropriate graph which reresents the rejection region for thermometers is as per option A. Two tailed.

First find out the respective z value for the area of 0.023
z-value = -/+ 1.9954 (use standard normal z table(

xbar = mean + z*sigma
as mean = 0 and sigma = 1, xbar values will be equal to z.

Hence cutoff values are -1.9954, 1.9954

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