Complete the following mcq:
1 For an ANOVA comparing three treatment conditons, what is stated by the null hypothesis (Ho)?
at least one of the 3 population means is different from another mean
none of these choices are correct (this is the one I chose)?
there are no differences between any of the population means
all 3 of the population means are different from each other
2 For an ANOVA comparing 3 treatment conditions, what is stated by the alternative hypothesis (H1)?
all 3 of the population means are different from each other
none of these choices is correct
at least one of the 3 population means is different for another mean (this is the one I had chosen?)
there are no differences between any of the population mean
3 When comparing more than 2 treatment means, why should you use an analysis of variance instead of using several t tests?
there is no advantage to using an analysis of variance instead of several t test
the analysis of variance is more likely to detect a treatment effect
using several t test increases the risk of a Type I error (this is the one I had chosen)?
using several t test increases the risk of a Type II error
4 In an analysis of variance, differences between participants contribute to which of the following variances?
neither between treatments variance nor within treatment variance (this is the one I had chosen?)
between treatments variance but not within treatment variance
both between treatments variance and within treatment variance
within treatments variance but not between treatments variance
5 In an analysis of variance differences caused by treatment effects contribute to which of the following variances?
between treatment variance but not within treatment variance
neither between treatments variance nor within treatments variance
within treatments variance but not between treatments variance
both between treatments variance and within treatments variance (this is the one I had chosen?)
6 On average what value is expected or the F-ratio if the null hypothesis is true?
k-1
1.00
N-k
0 (this is the one I had chosen)?
7 On average what value is expected for the F-ratio if the null hypothesis is false?
much greater than 1.00
between 0 and 1.00
1.00 (this is the one I had chosen)?
0
8 A research study comparing three treatments with n=5 in each treatment produces T1=5, T2=10, T3=15, with SS1=6, SS2=9, SS3=9 and EX2=94. for this study what is SS total?