__________________________________

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

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.

asked 2021-05-08

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.

asked 2021-05-05

\(\begin{array}{|c|c|} \hline Varieties & Location 1& Location 2& Location 3& Location 4& Location 5& Location 6 \\ \hline A& 35.3& 31.0& 32.7& 36.8& 37.2& 33.1 \\ \hline B& 30.7& 32.2& 31.4& 31.7& 35.0& 32.7\\ \hline C& 38.2& 33.4& 33.6& 37.1& 37.3& 38.2\\ \hline D& 34.9& 36.1& 35.2& 38.3& 40.2& 36.0\\ \hline E& 32.4& 28.9& 29.2& 30.7& 33.9& 32.1\\ \hline \end{array}\)

a. Use the appropriate nonparametric test to determine whether the data provide sufficient evidence to indicate a difference in the yields for the five different varieties of wheat. Test using \(\alpha\alpha=.05\).

b. How do the analysis of variance F test compare with the test in part a? Explain.

asked 2021-06-07

2) An experiment consists of four outcomes with \(P(E_1)=0.2,P(E_2)=0.3,\) and \(P(E_3)=0.4\). The probability of outcome \(E_4\) is ?

3) If A and B are mutually exclusive events with \(P(A) = 0.3\) and \(P(B) = 0.5\), then \(P(A\cap B) =?\)

4) The empirical rule states that, for data having a bell-shaped distribution, the percentage of data values being within one standard deviation of the mean is approximately

5) If a penny is tossed four times and comes up heads all four times, the probability of heads on the fifth trial is ?