The grades of a statistics midterm are normally distributed with a mean of 70 and a standard deviation of 2. Without using a cal

Question

3 years ago

10

The grades of a statistics midterm are normally distributed with a mean of 70 and a standard deviation of 2. Without using a cal

culator, what is the probability that a student will receive a grade between 74 and 76?
Group of answer choices

a. 34.12%

b. 4.30%

c. 13.6%

d. 2.15%

Mathematics

2 answers:

Ne4ueva [31] · Answer 1 · 2022-02-25T01:52:33+03:00

Ne4ueva [31]3 years ago

8 0

Answer:

i have the same question and i need an answer

Step-by-step explanation:

denis-greek [22] · Answer 2 · 2022-02-24T23:37:05+03:00

denis-greek [22]3 years ago

3 0

Answer:

The Empirical Rule can be used to solve this problem since a grade of 74 is exactly 2 standard deviations above the mean and a grade of 76 is exactly 3 standard deviations above the mean.

Step-by-step explanation:

This is all I know. But 34.12% is NOT the answer.