On a test that has a normal distribution, a score of 60 falls two standard deviations above the mean, and a score of 42 falls on

Question

vladimir1956 [14]

3 years ago

8

On a test that has a normal distribution, a score of 60 falls two standard deviations above the mean, and a score of 42 falls on

e standard deviation below the mean. Determine the mean of this test

Mathematics

2 answers:

Sergeu [11.5K] · Answer 1 · 2022-11-13T05:31:36+03:00

Sergeu [11.5K]3 years ago

7 0

Answer:

48

Step-by-step explanation:

Given that:

$A \ score \ of \ 60 \ falls \ two \ standard \ deviations \ above \ the \ mean \\ \\ A \ score \ of \ 42 \ falls \ one \ standard \ deviation \ below \ the \ m ean$

The interval for score = 60 - 42 = 18

If we divide it by the 3 standard deviations; the interval result into

= 18/3

= 6

So, the standard deviation is 6, and the mean = 42 + 6

= 48

Likurg_2 [28] · Answer 2 · 2022-11-13T06:51:51+03:00

Likurg_2 [28]3 years ago

6 0

Answer:

51

Step-by-step explanation: