Math, asked by callieannemoran07, 10 months ago

The results of a test are normally distributed with a mean of 80 and standard deviation of 5:
a) between 75 and 85 = % (round to nearest whole number)

b) betwwn 70 and 90 = % (round to nearest whole number)

Answers

Answered by sumit6082
0

Answer:

1/2

Step-by-step explanation:

a. Between 75 and 85

= 76, 77, 78, 79, 80, 81, 82, 83, 84, 85

10 Numbers -------1

b. Between 70 and 90

= 71, 72, 73 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90

20 Numbers ---------2

In dividing equation 2 from equation 1

=10/20

=1/2

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