Question

An IQ test was given to a simple random sample of 85 people in a certain town. The sample mean score was 104.5 with a standard deviation of 12. It is desired to construct a 90% confidence interval for the mean IQ score in that town. a.What is the point estimate? b. Find the critical value. d. Find the margin of error. d. Construct a 90% confidence interval.

Name: an iq test was given to a simple random sample of 85 people in a certain town the sample mean score was 1045 with a standard deviation of 12 it is desired to construct a 90 confidence interv 67367
Uploaded: 2023-05-30T04:07:12-08:00
Duration: 1 min 36 s
Channel: Jason Gerber
Description: an iq test was given to a simple random sample of 85 people in a certain town the sample mean score was 1045 with a standard deviation of 12 it is desired to construct a 90 confidence interv 67367

          An IQ test was given to a simple random sample of 85 people in a
certain town. The sample mean score was 104.5 with a standard
deviation of 12. It is desired to construct a 90% confidence
interval for the mean IQ score in that town. a.What is the point
estimate? b. Find the critical value. d. Find the margin of error.
d. Construct a 90% confidence interval.

Added by Louis D.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Jason Gerber

05/30/2023

Step 1

The point estimate is the sample mean, which is given as 104.5. b. Show more…

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An IQ test was given to a simple random sample of 85 people in a certain town. The sample mean score was 104.5 with a standard deviation of 12. It is desired to construct a 90% confidence interval for the mean IQ score in that town. a.What is the point estimate? b. Find the critical value. d. Find the margin of error. d. Construct a 90% confidence interval.