A researcher investigated whether the temperature of milk, x, can be used to predict the milk's pH content, y. She predicted the pH level of a glass of milk with a temperature of 8.45 degrees to be ŷ=...


A researcher investigated whether the temperature of milk, x, can be used to predict the milk's pH content, y. She predicted the pH level of a glass of milk with a temperature of 8.45 degrees to be ŷ= 6.795


a)A 95% confidence interval for the mean pH of all milk with temperature 8.45 degrees is calculated to be (6.76, 6.83). Which of the following is the correct interpretation of this confidence interval?







-The mean pH level for all glasses of milk having a temperature of 8.45 degrees is somewhere between 6.76 and 6.83, with 95% confidence.



-The pH level for one glass of milk with a temperature of 8.45 degrees is somewhere between 6.76 and 6.83, with 95% confidence.



-There is a probability of 0.95 that the mean pH level for this glass of milk with temperature 8.45 degrees is between 6.76 and 6.83.



-95% of all glasses of milk with a temperature of 8.45 degrees have a pH level between 6.76 and 6.83.



b)Suppose we have a glass of milk whose temperature is 8.45 degrees. We calculate a 95% prediction interval for the pH of this glass of milk to be (6.71, 6.88). Which of the following is the correct interpretation of this prediction interval?


Group of answer choices

-The mean pH level for all glasses of milk with a temperature of 8.45 degrees is somewhere between 6.71 and 6.88, with 95% confidence.



-The pH level for a glass of milk whose temperature is 8.45 degrees is somewhere between 6.71 and 6.88, with 95% confidence.



-There is a probability of 0.95 that the mean pH level for all glasses of milk with a temperature of 8.45 degrees is between 6.71 and 6.88.



-95% of all glasses of milk with a temperature of 8.45 degrees have a pH level between 6.71 and 6.88.













Jun 07, 2022
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