Question

ch 16 the mean iq of all seventh - grade girls in the school district is between 95.3 and 109.2, with 99% confidence.
this is an incorrect interpretation of the interval.
this is a correct interpretation of the interval.
question 8
1 pts
ch 16 all confidence intervals have the form
estimate ± z*margin of error.
estimate ± margin of error.
estimate ± standard error.
estimate ± z*standard error.

Explanation:

For the first question, a 99% confidence interval for the mean IQ of seventh - grade girls being between 95.3 and 109.2 means we are 99% confident that the true population mean lies within this interval, so the given interpretation is correct. For the second question, the general form of a confidence interval is estimate ± margin of error. The multiplier (like $z^{*}$) is already accounted for in the calculation of the margin of error.

Answer:

Question 7: This is a correct interpretation of the interval.
Question 8: estimate ± margin of error.