The mean IQ score for all students at USF is 100. The students in our sample are

Question

The mean IQ score for all students at USF is 100. The students in our sample are a random sample of the UWF students who have a learning disability. The researchers are planning to use the sample to obtain an estimate of the SD. What statistical test should the researcher use and why? One sample z- test One sample t-test for the mean of a normal distribution with unknown variance A paired-t test Two sample t Test for Independent Samples Inferences when variances are unequal Two Sample t Test for Independent Samples with equal variances

Explanation / Answer

Here reseacher need to test population mean but population standard deviation is unknown. So sinlge sample t test will be used.

Correct option:

One sample t-test for the mean of a normal distribution with unknown variance

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