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1. The price of a share of Kraft stock is normally distributed with mean 33.30 and standard deviation 6.10 What is the probability that on a randomly chosen day in the period for which our assumptions are made, the price of the stock will be more than $40 per share? Less than $30 per share?
2. The amount of oil pumped daily at Standard Oil's facilities in Prudhoe Bay is normally distributed with mean 800,000 barrels and standard deviation 10,000. In determining the amount of oil the company must report as its lower limit of daily production, the company wants to choose an amount such that for 80% of the days, at least the reported amount x is produced. Determine the value of the lower limit x.
1. what information does calculating standard deviation provide? how is the z-score related to standard deviation?2.
The formula for a regression equation is Y' = 2X + 9. What would be the predicted score for a person scoring 6 on X? If someone's predicted score was 14, what was this person's score on X
a competency test has scores with a mean of 69 and a standard deviation of 4. a histogram of the data shows that the
the gypsy moth is a serious threat to oak and aspen trees. a state agriculture department places traps throughout the
1.on november 26 1995 the minneapolis tribune ran an article on gender differences in shopping behavior. when 400 women
1 a batch of 500 containers for fronzen orange juice contains five that are defective. two are selected at random
Choose a person aged 19 to 25 years at random and ask, "how many times have you worked out in the past?" Call the response X for short.
1.In a study of caffeine and stress, college students indicate how many cups of coffee they drink per day and their stress level on a scale of 1-10. The data appear below:
the random variable x is normally distributed with meannbspmu and variancenbspsigmasquared. given that px gt 58.37
1.real estate agents always say location location location is the most important thing in buying a house. we want to
Average salary of $27,839 with a standard deviation of $7,400. At the 0.01 significance level, do teachers with Master Degrees have higher salaries?
Immediately after inspection the condition of the machine is noted and classified into one of four possible states:
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