Exam 10: Only the Lonely

You have a sample of 45 male teens ages 15-19 have with a mean height of 70.8 inches and assume you have a ? = 1.5 inches. What is the equation that will determine the standard error of the mean?

The symbol $\bar { X }$ in the Z Test equation is defined as?

A Z Test is preferred when the population (n) is?

Using the standard error of the mean allows the researchers to use the table of z scores to:

Write the formula used for computing the value for a one sample Z-Z-test and define each of the three components.

What Greek letter represents the population average in a Z Test equation?

In Excel, what are the three components of the ZTEST function?

A good reason to use a one sample Z-test is to know if the sample values are different from a given?

Excel differentiates z-scores and z-values by identifying one sample test by using what function?

Degrees of freedom for the Z Test are not required given that z-scores of 1.96 and 2.58 are used for 5% and 1% respectively.

The observed sample mean?

When you reject the null hypothesis when it is really false, then you have made a?

Because these compare between two means to suggest whether both samples come from the same population the Z Test is similar to.

If you have a sample of size 60 and a sample mean of 8.3 was selected from a population where ? = 1.2 (the standard deviation for the population), determine the interval for the population average (?) at the 95% confidence interval.

If the obtained z value is more extreme than the critical value, then?

What can be said about data points and Z Tests?

The formula to compute the standard error of the mean requires the standard deviation for the population divided by the square root of?

If the n is less than 30, what should the distribution be?

When you reject the null hypothesis when it is really true, then you have made a?

The Array is also known as the?