TTest Command

TTest[ <List of Sample Data>, <Hypothesized Mean>, <Tail> ]

Performs a one-sample t-test of a population mean using the given list of sample data. Hypothesized Mean is the population mean assumed in the null hypothesis. Tail has possible values "<", ">" , "≠". These specify the alternative hypothesis as follows.

"<" = population mean < Hypothesized Mean

">" = population mean > Hypothesized Mean

"≠" = population mean ≠ Hypothesized Mean

Results are returned in list form as {Probability value, t-test statistic}.

Example:

TTest[{1, 2, 3, 4, 5}, 3, "<"] yields {0.5, 0}.

TTest[ <Sample Mean>, <Sample Standard Deviation>, <Sample Size>, <Hypothesized Mean>, <Tail> ]

Performs a one-sample t-test of a population mean using the given sample statistics. Hypothesized Mean and Tail are defined as above. Results are returned in list form as {Probability value, t-test statistic}.

Example:

TTest[4, 1, 12, 4, "≠"] yields {1, 0}.