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One state lottery has 500 prizes of $1, 75 prizes of $15, 15 prizes of $100, 5 prizes of $450, 2 prizes of $1225, and 1 prize of 2500. Assume that 28,000 lottery tickets are issues and sold for $1. What is the lottery's expected profit per ticket?
It is the gallons of water processed at a plant, and the amount of lead removed from the water. A. Make a scatterplot to determine what kind of relationship there seems to be between the two variables. Use the percent of lead removed as the respon..
A statistical study reported that a drug was effective with a p-value of .042. (a) Is this true? An effective sample may be found about 42 times in 1000 samples.
The heights in centimeters of 5 students are: 165, 175, 176, 159, 170. The sample median and sample mean are respectively:
If there are 5 choices for a question and there is a 50% chance that the student knows the answer, what is the probability that the student knew the answer to a question he correctly answered?
Obtain the simple linear regression equation, then analyze the residuals by (a) constructing a histogram
To investigate this belief, he randomly samples 41 adult women and records their weights. The scores have a mean of 111 lbs. and a standard deviation of 12.4. A local census taken several years ago shows the mean weight of adult women was 115 lbs.
If 25 men aged 18-24 are arbitrarily chosen, determine probability that their mean serum cholesterol level is between 165 and 200.
In order to test the assumption of a Poisson distribution, a random sample of 150 ten-minute intervals was taken.
The probability that an American CEO can transact business in a foreign language is .20. Ten American CEOs are chosen at random.(Round your answers to 4 decimal places.)
Given a normal distribution of data, we know from the Empirical Rule that in between 2 standard deviations from the mean
Compute the median number of dependents?
Utilizing Excel data analysis calculate t distribution also deduce the result. Study of variance is used to investigate if there is a difference in the mean mileage of the three cars.
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