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comparing the weight of every person in a group of people before they went on a diet with their weight after they completed the diet program. I would want to know whether each person's weight after the program significantly greater than their weight beforehand. 2 sets of groups coming from the same set of people. One set represents the weight before treatment. The other set represents the weight after treatment. In a case like this use a paired-sample t-test. assist with setting up this formula.
With a major expansion planned, Judy projects sales next year to increase to 1,200 radials. What will the demand be each season? Please show work (formulas).
Let x be a random variable that represents the commute time of teachers in a large urban area. If x is normally distributed with a mean of 46 minutes and a standard deviation of 5 minutes, find the commute time which is at the top of the bottom 25..
Expectation and variance of a random variable and let X be a random variable with the following probability distribution:
54% of men consider themselves professional baseball fans. You randomly select 10 men and ask if he considers himself a fan. Find the probability that the number who consider themselves professional fans is
What is the probability that a single randomly selected juror from Hidalgo County is Mexican-American? Explain briefly. What is the probability a single randomly selected juror is not Mexican-American? Explain briefly.
The time to failure of a nickel-cadmium battery is Weibull-distributed with parameters v=0 α = 1/2 years and β = 1/4. Find the fraction of batteries that are expected to fail prior to 1.5 years.
When 500 college students are randomly selected and surveyed, it is found that 135 of them own personal computers (based on data from the America Passage Media Corporation).
Formulate a linear programming model for this problem.
If the airline books 76 people on a flight for which the maximum number is 74, what is the probability that the number of people who show up will exceed the capacity of the plane?
Public transportation and the automobile are two methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.
Nathan wants to approximate a binomial probability by normal curve areas. The number of trials is 50 and the probability of success for each trial is 0.95
Using alpha = 0.05 and a computed value of +4.49, can we conclude that the percentage of claims for married policyholders is less then for single policyholders?
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