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11. Jake scored a 94 on his last quiz, which was exactly 2 standard deviations above the
mean of his class. If the standard deviation was 3, what was the mean grade on the quiz?

Respuesta :

Answer:

86 92

Step-by-step explanation:

Parrain

Based on the fact that Jake's score was exactly 2 standard deviations above the mean, the mean grade must have been 92.

What was the mean grade?

Jake scored a 94 in the test and this score is 2 standard deviations above the mean.

This means that the mean can be found as:

= Jake's score - standard deviation

Solving gives:

= 94 - 2

= 92

Find out more on standard deviation at https://brainly.com/question/475676.