__________________________________

A | 2 | 5.4 |2.65 |1.2979|

B | 3 | 9.1 |3.033|1.4857|

AB | 6 | 4.8 | 0.8 |0.3918|

__________________________________

b) No

c) No

Question

asked 2021-07-02

(a) Calculate pairwise confidence intervals for the factor level means with an overall confidence level of 95%.

(b) Make a diagram showing which factor level means are known to be different and which ones are indistinguishable.

(c) What additional sampling would you recommend to reduce the lengths of the pairwise confidence intervals to no more than 2.0 ?

asked 2021-05-21

An analysis of variance can be used to compare:

A. Two treatments with categorical data

B. Three treatments with continuous data

C. Three treatments with categorical data

D. None of the above

A. Two treatments with categorical data

B. Three treatments with continuous data

C. Three treatments with categorical data

D. None of the above

asked 2021-06-24

What are the treatments for a designed study that utilizes one qualitative factor with four levels: A, B, C, and D?

asked 2021-06-02

The two-way table summarizes data from an experiment comparing the effectiveness of three different diets (A, B, and C) on weight loss. Researchers randomly assigned 300 volunteer subjects to the three diets. The response variable was whether each subject lost weight over a 1-year period. \(\text{Diet}\ \text{Lost weight?}\)

\(\begin{array}{l|c|c|c|c} & \mathrm{A} & \mathrm{B} & \mathrm{C} & \text { Total } \\ \hline \text { Yes } & & 60 & & 180 \\ \hline \text { No } & & 40 & & 120 \\ \hline \text { Total } & 90 & 100 & 110 & 300 \end{array}\)

Suppose we randomly select one of the subjects from the experiment. Show that the events "Diet B" and "Lost weight" are independent.