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Assuming the population is roughly symmetric, construct a 95% confidence interval for the mean annual consumption of alcoholic beverages by European young women (to 1 decimal).
Is type of restaurant factor in overall customer satisfaction. Predict the Consumer Reports customer satisfaction score for a seafood/ steakhouse that has an average meal price of $20. How much woul
What is the standard error of the proportion if samples of size 100 will be used for statistical process control (to 4 decimals)?
Can we conclude from these data that the mean tensile strength for the population is less than 20 pounds? Assume that the tensile strengths are approximately normally distributed. Let alpha = 0.05.
Create the regression equation that predicts an indivisuals political attitudes based on the number of times thhey read the wall street Journal (in months)
Two students from a certain university are randomly selected from all other students who attend that university. The two students do not know each other. Let a= the first student has taken statistic
A poll is given, showing 25% are in favor of a new building project. If 9 people are chosen at random, what is the probability that exactly 5 of them favor the new building project?
A bag contains 6 red balls, 12 blue balls, 7 yellow balls, and 4 green balls. Gary reaches in and pulls out one ball. If gary pulls out a blue or a green ball, he wins. What is the probability that
A study of 35 golfers showed that their average score on particular course was 92. The standard deviation of the sample is 5. Find the best point estimate of the mean?
Develop the estimated regression equation that can be used to predict the coachs salary given the revenue generated by the program and the percentage of wins.
A simple random sample of 60 items resulted in a sample mean of 80. The population standard deviation is 18. Compute the 95% confidence interval for the population mean (to 1 decimal).
Suppose that the service rates at the three stands are large enough so that a stationary distribution exists. At what rate do the three stands make sales. To check your answer note that since each e
A Psychologist has developed a new method designed to help people taking an exam. The method requires the person to come to the office of the Psychologist 5 times over a 5 week period and involves h
Find a 95% confidence interval for the true mean score by hand. What sample size would be needed so that the 95% confidence interval for the true mean score has an error of E=2.5?
Calculate the probability that the price of large popcorn falls between 3.5 and 6.5. Assuming that the Mean of prices for the sample of 50 theaters is 6. Tell us whether this result was obtained by c
From prior studies of LDL levels, best known estimate of the population varianceof this measure is 12.4. How large a sample will be needed to obtain the required estimate?
A researcher examined rates of posttraumatic stress disorder (PTSD) in mothers and fathers. Parents were interviewed 5 weeks after an accident of new diagnosis of cancer or type I diabetes for their
What, exactly, is the patient asking about the test? Identify the approptiate population paramete nedded to answer the patent's question.
A Pew Internet and American Life Project 2007 report stated that 74% of teenage boys posted their photo on their online profile, while 83% of teenage girls did so. Assume that the sample sizes were
Use these data to test for equality of variances. What is the P value of your test and what conclusion do you draw?
Plot the following set on a scatter plot. Estimate the correlation and them compute it. Next identify any outliners in the following sets of data. Explain why you consider these to be outliners. Nex
A box of candy contains 25 candy bars, of which 10 contain peanuts and 15 do not contain peanuts. if you select five bars at random, find the probability that exactly three of the bars contain peanu
According to the US Census Bureau, 7.1% of Americans living in 2004 were between the ages of 20 and 24. You take a random sample of 500 Americans and find that 28 of them are between 20 and 24 years
The probability density function f(x) = x/8 exists for the interval 3 < x < 5. What is Prob(X > 4)?