Assume that the readings on the thermometers are normally distributed with a mea

Question

Assume that the readings on the thermometers are normally distributed with a mean of 0 degree and standard deviation of 1.00 degree C. Assume 2.6% of the thermometers are rejected because they have readings that are too high and another 2.6% are rejected because they have readings that are too low. Draw a sketch and find the two readings that are cutoff values separating the rejected thermometers from the others. Which graph represents the region in which thermometers are rejected? Choose the correct graph below. The cutoff values are degrees. (Use a comma to separate answers as needed. Round to two decimal places as needed)

Explanation / Answer

Correct graph will be option 3

Critical value will be -1.94, 1.94

Lower cutoff value = -1.943134*1+0 = -1.94

Upper cutoff value = -1.943134*1+0 = -1.94

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