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A researcher wishes to compare the effect of the rate of stepping on heart rate in a step-aerobics workout. A collection of 30 adult volunteers was randomly divided into three groups of 10 subjects each. Each group did a standard step-aerobics workout with group 1 at a low rate of stepping, group 2 at a medium rate of stepping, and group 3 at a high rate of stepping. The mean heart rate at the end of the workout for all subjects was determined in beats per minute. Assume the data for the three groups are independent and the data are approximately Normal. The means and standard deviations of the heart rates for the three groups are given below.
An ANOVA F test was run on the data with the following results.
Multiple comparison procedures are going to be done using the Bonferroni method with = 0.10. The value of t ** is 2.2426. Which of the following is the appropriate conclusion from carrying out these multiple comparisons?
A. Group 3 has a higher mean heart rate than either group 1 or group 2. Group 1 and group 2 are indistinguishable.B. Group 3 has a higher mean heart rate than group 1. The other pairs of means are indistinguishable.C. Neither choice is correct.
Compute a 95% confidence interval for the mean using the formula and where is the mean of the ten random numbers.
Use the list of random digits below to assign 4 men and 2 women to the shark fin treatment. Read the table from left to right, first selecting the 4 men and then the 2 women. Use the numerical labels given in the chart to the names.
If is the proportion of the next 100 shoppers that buy a packet of the crackers after tasting a free sample, then the probability that fewer than 30% buy a packet after tasting a free sample is approximately.
Their resting heart rates were measured. A partial ANOVA table is given.
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
At the end of 24 weeks of treatment, subjects were classified as responders or non-responders to treatment based on a battery of psychological tests.
The chance both flights are full is 0.6. Are the two flights being full independent events and What was the mean ranking for the females in this class
Examine the relationship between final grade and the reported hours per week each student said they studied for the course. Do we have evidence that females are being discriminated against?
MATH1550H: Assignment: Question: what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?
Which of the following statements is consistent with the scatterplot
What is the probability that they all hit the target?
Which of the following assumptions for inference about a proportion using a confidence interval are violated,
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