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Q1) Assume manufacturer of Advil, common headache remedy, just developed new formulation of drug that is claimed to be more effective. To estimate new drug, a sample of 200 present users is asked to try it. After one-month trial, 180 indicated new drug was more effective in relieving a headache. At the same time sample of 300 current Advil users is given present drug but told it is new formulation. From this group, 261 said it was the improvement. At.05 significance level can we conclude that new drug is more efficient?
Q2) Coffee manufacturer is interested in whether mean daily consumption of regular-coffee drinkers is less than that of decaffeinated-coffee drinkers. Suppose population standard deviation for those drinking regular coffee is 1.20 cups per day and 1.36 cups per day for those drinking decaffeinated coffee. Random sample of 50 regular-coffee drinkers illustrated a mean of 4.35 cups per day. Sample of 40 decaffeinated-coffee drinkers illustrated a mean of 5.84 cups per day. Use.01 significance level. Calculate the p-value.
The amount ($1.00, $5.00, $10.00, $25.00, or $50.00) promised to each person was determined by randomization. For each person who was sent one of the surveys, The value of the X2 test statistic for testing the hypothesis
A manufacturer of billiard balls is testing three additives to the basic plastic. Show the partial ANOVA table
In this paragraph, be sure to make it clear how you handled the issue of conducting three planned comparisons. Also provide the ANOVA summary table for these results.
Evaluate the standard deviation - use the conservative value for the degrees of freedom, Assume the two groups are independent and the data are approximately Normal. Let µ 1 and µ 2 represent the mean heart rates we would observe for the entire po..
How much net profit can John expect (on average) to earn from the store in total over the next five years?
Find the probability that the number of who consider themselves basketball fans is :
Solve linear program graphically
Compute the probability that randomly chosen student with a Master's degree majored in English or mathematics?
Which of the following events are disjoint and What proportion of the females rated their intelligence less than 7.
Suppose the probability of the worst-case scenario increases Compute the expected value of perfect information
Provide a discussion that supports the assumption that the variance of savings increases with family income.
If you have a statistical package that computes binomial probabilities, find the probability that at least five funds outperform the market in all 10 years.
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