A worldwide organization of academics claims that the mean IQ score of its members is 115, with a standard deviation of 17. A ra
ndomly selected group of 35 members of this organization is tested, and the results reveal that the mean IQ score in this sample is 115.2. If the organization's claim is correct, what is the probability of having a sample mean of 115.2 or less for a random sample of this size
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Answer:
Step-by-step explanation:
<h3>Step 3:</h3> --------------------(1)
- to find the b² for the expression on the left.
Take the expression
<u>We can also write it as:</u>
According to the formula , the b of this expression is
. So,
b² will be:
So, we will add to both sides in Eq. (1)
For STEP 4, the equation will become:
We can solve this problem by using the distance formula. The distance formula is: We can now put in values and solve.