A hypothesis test for the difference between two means is considered a two-tailed test when:
A) the population variances are equal.
B) the null hypothesis states that the population means are equal.
C) the alpha level is 0.10 or higher.
D) the standard deviations are unknown.
Question 2
Once you have determined the class width using the formula, high-low divided by the number of classes, it is appropriate to round to the nearest integer to make the analysis easier.
Indicate whether the statement is true or false
A hypothesis that suggests an explanation of the function of the gene that is defective in patients
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