Quiz 7
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In regards to the first question, what is the standard error?
.2942
An IQ test was given to a random sample of 26 patients and the mean was found to be 97.6. The population values are known to be normally distributed with a population standard deviation of 1.5. The .10 level of significance is being used for this problem. Your first question related to this problem is to indicate the z or t score (z or t value).
1.645
In regards to the first question, construct a 90 percent confidence interval for the mean IQ of the population of patients.
97.1160<pop.mean<98.0840
As you examine the confidence interval, how likely would it be that a patient has an IQ above 100?
A small possibility.