test.mean: Hypothesis test for a mean

In statpsych: Statistical Methods for Psychologists

Hypothesis test for a mean

Description

Computes a one-sample t-test for a population mean using the estimated mean, estimated standard deviation, sample size, and null hypothesis value. Use the t.test function for raw data input. A confidence interval for a population mean is a recommended supplement to the t-test (see ci.mean).

For more details, see Section 1.11 of Bonett (2021, Volume 1)

Usage

test.mean(m, sd, n, h)

Arguments

m	estimated mean
sd	estimated standard deviation
n	sample size
h	null hypothesis value of mean

Value

Returns a 1-row matrix. The columns are:

• t - t test statistic

• df - degrees of freedom

• p - two-sided p-value

References

\insertRef

Snedecor1980statpsych

\insertRef

Bonett2021statpsych

Examples

test.mean(7.9, 3.05, 100, 7)

# Should return:
#        t df       p
#   2.9508 99 0.00396
 

statpsych documentation built on Jan. 13, 2026, 1:07 a.m.