In how many ways can a committee of 5 students be formed from 10 students?

If we say that we have statistically significant results, we mean that the results are: very important. meaningless. likely to be due to chance differences between to be due to true differences between the groups.

A researcher rejects the null hypothesis only if the obtained statistical results show: that it is likely that the null is true. that it is unlikely that the null is true. that it is likely that the alternative hypothesis is false. that is unlikely that the alternative hypothesis is false.

The probability of committing a Type I error: is solely determined by the size of the treatment effect. cannot be controlled by the experimenter. is determined by the alpha (a) level that one chooses. is determined by the beta ( \( \beta \) ) level one chooses. is determined by the sample size that one chooses.

Statistical analysis of the data is: required by professional associations. used to in order to interpret the data. required to torture research methods students. a waste of time when we already know the truth. used make a study more credible.

A design that has two conditions (treatments) with the same participants experiencing each condition is a(n): two independent groups design. repeated measures design. Analysis of Variance (ANOVA) design. single sample t test design. single sample Z test design.