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A medical researcher wants to try three different techniques to lower cholesterol levels. The subjects are randomly selected and assigned to one of three groups. Group 1 is given medication, Group 2 is given an exercise program, and Group 3 is assigned a diet program. At the end of six weeks, each subject's cholesterol level is recorded.
Group 1
Group 2
Group 3
13
2
12
11
5
4
15
3
8
9
0
6
1. state the requirements that must be satisfied in order to use the one-way ANOVA procedure.
2. Find the critical F-value to test the hypothesis that there is no difference among the means. Use α = .05
3. Find the test F statistic to test the hypothesis that there is no difference among the means. Use α = 0.05.
the market price for a certain product is 5 per unit and occurs when 14000 units are produced. at at price of 1 no
Let sales be the independent variable and earnings be the dependent variable. Draw a scatter plot. Compute the coefficient of correlation Compute the coefficient of determination.
Indicate your hypotheses, decision rule, statistical decision and management conclusion using the critical value and then find the p-value and state your decision rule, statistical decision and management conclusion using this method.
Based on our sample, how do you interpret the results and what do these results suggest about the population means for male and female average salaries?
In chi-square goodness-of-fit test when there is close agreement between observed frequency and expected frequency, chi-square test value will be small.
The standard deviation of the sample was 1.7 years. Using the 0.95 degree of confidence, what is the confidence interval within which the population mean lies?
The question of interest is whether mean GPA is the same or differs for different weight attitude populations. Minitab output for the study is given above. The mean square error (MSE) in this study is:
If the agent has enough time to contact only 15 customers, how confident can she be of selling all four houses within the available time?
six second-graders tried tossing a ball into a basket ten times each. their teacher then suggested a different way of
Is there evidence that mean dimension is not 221 mm? Suppose population is normally distributed. Use a=0.05 and critical value method.
Carry out a test of hypothesis on each of regression coefficients. Could you delete any of the variables?
a major chain of food stores wants to determine the proportion of customers who buy on impulse. the company decided to
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