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Question: Weight loss. A weight-loss program conducted a randomized experiment to determine whether people lost weight after eight weeks on the program. The researchers report that, on average, the subjects in the study lost weight and that the weight loss was statistically significant with a P-value of 0.008. Do you find the results convincing? If so, why? If not, what additional information would you like to have?
in a community 40 of the population is smoker. i randomly choose 60 residents from that community and ask if each of
Conduct an analysis of variance on the data. Summarize the results in an ANOVA table.- Conduct the appropriate ANOVA F-tests at α = .01. Interpret the results.
suppose ben records the noon temperature in new york city on every day in the month of june and frank records the noon
based on the cell phone usage data what is the most economical individual plan?69.99 unlimited monthly1.99day
Answer these three questions and show all your work and use the z-table that is in the back of all statistic book 1) Suppose you know that adult female height is normally distributed and the mean is 65 inches with a std dev of 1.2 inches. What is th..
1. suppose an experiment has five equally likely outcomes e1 e2 e3 e4 e5. assign probabilities to each outcome and
Let S be any set and S∞ the set of all sequences {xn }n≥1 with xn ∈ S for all n. Let C be a subset of the Cartesian product S × S∞. Also, S × S∞ is the set of all sequences {xn }n≥0 with xn ∈ S for all n = 0, 1,... .
Let us first focus on one day. What is the probability that on this given day, the system works with no downtime, i.e. what is the probability that zero computers crash?
Find the sample mean of the ages of the 54 members of the symphony.
Explain why trying to compute a simple average of all error deviations and of all treatment deviations will not lead to any results.
Suppose that a group of 48 students who took the SAT was chosen. If you wanted to calculate a probability for the average SAT score for these 48 students, what is the standard error.
What is the margin of error of your estimate of the population mean at a 95% confidence level? Construct a 95% confidence interval for the mean such expenses for all the students.
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