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Every Normal model is defined by its parameters: the mean and the standard deviation.
Suppose that the mean ?= 20, and that 45% of the area is above 30. What is the standard deviation?
A) 60
B) 70
C) 80
D) 90
if a gambler rolls two dice and gets a sum of 9 he wins 12 and if he gets a sum of four he wins 20. the cost to play
What is the probability of selecting a credit card customer at random and finding the customer charged between $70 and $83? compute the probability of charges less than $54.
How should he go about taking samples to gather data for testing the hypotheses?
To find the 95 percent confidence interval for the true population mean. From the results below, is it true that 95% of the sample means will fall
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Find the optimal order quantity and what is the optimal total ordering cost per year vs. what is that cost with the current policy?
Add line-of-best fit (trend line/linear regression line) to your scatterplot. Write down the equation of the trend line below.
Is it sensible to conclude that this set of n=16 people is not representative random sample of registered voters?
Other research examining the effects of preschool childcare has found that children who spent time in day care, especially high quality daycare, perform better on math and language tests than children who stay at home with their mothers
a box of 10 gloves contains three left-handed gloves and seven right-handed gloves. complete parts a through d.a. if
Find out the conditional probability for the given data. Illustrate what is the conditional chance that the selected person is male?
A standard deviation of 1 month will have a total lifetime of at least 45 months if all of the bulbs are used non stop.
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