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1. A geological study indicates that wells drilled in a certain area should strike water with probability 0.2. Find the probability that:
a) first strike of water comes in the 3rd well drilled
b) 3 strikes of water in 5 drills
2. A large elevator has a max weight limit of 10,000 lbs. Suppose a load has 45 boxes. This has a probability distribution with mean = 200 lbs and standard deviation = 55 lbs.
a) What is the probability that all 45 boxes can be loaded in 1 trip?
b) what assumptions have to be satisfied.
He argues that the regression effect says people who perform very poorly in their previous job tend to perform well in their next job. Is this what the regression effect says? Explain.
Compute the standard error of estimate, and interpret its meaning.
Recognize the midpoint of the first class. Recognize the class boundaries of the first class.
Machine which fills quart milk cartons is set up to average 32.2 oz per carton, with standard deviation of 1.2 oz. Determine probability that filled carton will contain less than 32 oz of milk?
Researchers at the Brigham & Women's Hospital recruited 2,000 participants to study the relation between diet and cholesterol.
How much net profit can John expect (on average) to earn from the store in total over the next five years?
Super Markets, Inc. is considering expanding into the Scottsdale, Arizona, area. Ms. Luann Miller, Director of Planning, must present an analysis of the proposed expansion to the operating committee of the board of directors.
On a very hot summer day, 5 percent of the production employees at Midland States Steel are absent from work. The production employees are randomly selected for a special in-depth study on absenteeism.
Produce the scatter plot for sodium and bp. Do you think there are any outliers?
A sample of n=20 has a mean of M=40. If the standard deviation is s=5, would a score of x=55 be considered an extreme value?
A survey of undergraduate students in the School of Business at Northern University revealed the following regarding the gender and majors of the students:
Heights of 18-year-old men are approximately normally distributed, with mean 68 inches and standard deviation 3 inches.
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