When using a t-test, how do we determine if we reject the null hypothesis?
What will be an ideal response?
In order to reject a null hypothesis the calculated t-value must be larger than a critical t-value, from the t-table. We choose a critical t-value by selecting a one- or two-tailed test, calculating the degrees of freedom, and selecting a probability level (usually 0.05 or 0.01). If the absolute value of the observed test statistic is greater than or equal to the critical value, reject the null hypothesis; if the observed t is smaller than the critical value, do not reject it.
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Why has the War Powers Act, which was passed by Congress to limit the president's ability to initiate international conflict, constrained presidents less than its designers had hoped it would?
a. The president has a large group of foreign and defense policy advisors. b. The president has unlimited appropriations for foreign and defense policy. c. The president has the power to approve treaties. d. The president can pass laws that require Congress to act. e. The president cannot use the military without prior approval from Congress.
Beyond influencing the legislature, lobbyists at the state level also work with officials in the executive branch and even the judiciary in getting their point across to state governments
Indicate whether the statement is true or false