In a large population of collegeeducated adults the mean IQ

In a large population of college-educated adults, the mean IQ is 115 with a standard deviation of 20. Suppose 100 adults from this population are randomly selected for a market research campaign.

The parameter(s) here is(are)

the mean IQ (m) of college-educated adults.

the standard deviation (s) of IQs of college-educated adults.

Neither A nor B

Both A and B

A statistic here is

the mean IQ (m) of college-educated adults.

the standard deviation (s) of IQs of college-educated adults.

the sample mean IQ calculated from the 100 college-educated adults.

None of the above

Solution

1)

Both A and B

2)

the sample mean IQ calculated from the 100 college-educated adults.