A typical adult has an average IQ score of 105 with a standard deviation of 20. If 20 randomly selected adults are given an IQ t

Question

2 years ago

9

est, what is the probability that the sample mean scores will between 102 and 110 points? (Round to 2 decimal places)

1 answer:

Gnoma [55] · Answer 1 · 2022-09-18T15:51:57+03:00

Answer: 0.55

Step-by-step explanation:

Given :

A typical adult has an average IQ score of n $\mu=105$ with a standard deviation $\sigma=20$ .

Sample size : n= 20

Let x represents the IQ score of adults.

The probability that the sample mean scores will between 102 and 110 points will be :-

$P(102$

Therefore, the probability that the sample mean scores will between 102 and 110 points = 0.55