Behavioral Sciences STAT

When is a t-test used instead of a z-test?

What is $S \bar{X}$ ?

Which of the following is one of the requirements of a one-sample t-test?

What does the $t_{o b t}$ value indicate?

Which of the following requirements is common to both the z-test and the one-sample t-test?

Colin has computed the variance for his 10 raw scores and obtained = 16.37.He then computed $S_{X}^{2}$ $S \bar{X}$ as follows: $s \bar{x}=\sqrt{\frac{4.046}{10}}=0.636$ What is wrong?

Which of the following is not one of the steps in a one-sample t-test?

How is the t-distribution defined?

For a given level of α, when does $t_{c r i t}=Z_{c r i t}$ ?

For a two-tailed test with α = 0.05, the $t_{\mathrm{crit}}$ value is

Unless we use the correct from the t-distribution for the appropriate N,

What happens to the absolute value of $t_{\mathrm{crit}}$ as df increases? It

Which of the following would make it more likely your t-test will be significant?

After determining your one-tailed t-test is significant, what should you do?

The precise location on the dependent measure where we expect our population mean to fall refers to

Interval estimation suggests a ________ where we expect the ________ to fall.

Suppose a poll has been conducted on Americans' favorable attitudes towards a certain issue.If it is reported that Americans are 56%+4% in favor of the issue, which of the following is not a possible value represented within the margin of error?

When is a sample mean likely to represent a particular population mean?

To achieve statistical significance for a one-sample t-test,

Suppose we have a 95% confidence interval of 12.23 and 16.75.What does this mean?