When creating a confidence interval for a numerical variable, you check that the “t-curve” is appropriate...
When creating a confidence interval for a numerical variable, you check that the “t-curve” is appropriate to use by showing that
a. you have a random sample
b. n >= 30 OR NPP P-value > .05
c. n >= 10
d. np(1 – p) >= 10
Homework Answers
To use t test the basic assumption is Normality.
That the the sample follows a normal distribution or the data is normaly distributed from which the sample is drawn.
The option b satisfied the normality condition.
Therefore, option b is correct
b. n >= 30 OR NPP P-value > .05
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