On the TI-83/84, the command is in the DISTR menu and is tcdf(. The syntax for this command is The population of the random variable is normally distributed, though the t-test is fairly robust to the ...On the TI-83/84, the command is in the DISTR menu and is tcdf(. The syntax for this command is The population of the random variable is normally distributed, though the t-test is fairly robust to the condition if the sample size is large. Do the data provide evidence at the 5% level that the IQ of a famous person is higher than the average IQ of 100? If some of the assumptions are not met, note that the results of the test may not be correct and then continue the process of the hypothesis test.
