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There a flu epidemic that is spreading across SF County. You are a principle and are in charge of 32 teachers. You want to plan ahead and be able to estimate how many substitute teachers the school may need during this epidemic. The probability that a San Francisco resident will become ill is 0.23. We are interested in the number of High School teachers that will become ill.
(a) What is probability that 5 teachers will get the flu?
(d) What is the probability that at least 2 teachers will get the flu?
(e) What is the expected number of teachers that will become sick? How many substitute teachers will you have ready during the flu epidemic? Why?
Assume that the cost for this type of hospital emergency room visit is normally distributed with a standard deviation of $92. Assume that the following questions about the cost of a hospital emergency room visit for this medical service.
Based on the information, what decision should the director make about the books used for the courses if the goal is to keep the cost below $300?
The researcher was interested in how well what he/she manipulated predicts how happy subjects feel at the end of the procedure. Using the data below, calculate the regression constants and present the equation for the regression line.
When the names of all the students at Omega University were dropped to a fishbowl, they would include:
Consider a four digit uniform random number generator; as in each of the 10,000 values 0.0000 through 9999 is equally likely. Find the mean and variance of the values produced by such a random number generator.
In an article entitled "Fuel Economy Calculations to Be Altered," James R. Healey indicated that the government planned to change how it calculates fuel economy for new cars and trucks.
The number of viewers of American Idol has a mean of 29 million with a standard deviation of 5 million. Assume this distribution follows a normal distribution.
Employ the frequency distribution, which describes the response of a survey of college students when asked, "How often do you wear a seat belt when riding in a car driven by someone else?"
A survey of college students collected information on several variables: Distance from Home, Age, Major, Gender, and Class. The variable Major is
Choose the correct conclusion regarding the claim that the weights of statistics text vary more than the weights of text in general.
For adults 60 years or older, they found a mean daily intake of 721 mg with a standard deviation of 454 mg. Using these values for the mean μ and standard deviation σ for the U.S. population:
John conducted his study to measure self-esteem among victims of domestic violence before and after they complete an 8-week program for abuse victims with 10 individuals. He calculated t = 1.9 from his data.
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