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A population has a mean score of 75 and a standard deviation of 13. What is the probability of choosing a random sample of 100 people from this population with a mean of 78 or higher? Show work.
What is the probability that the percentage in the sample will deviate from the population percentage by no more than 7 percentage points?
Test whether the music reduces studying capacity at a .05 level of significance.
Critically discuss understanding the normal distribution and the factors that affect its shape important in solving business and marketing-related questions?
home homework help questions and answers math statistics and probability let xn1387. a what range of values will
The Speedy Oil Change Company advertised a 15-minute wait for an oil change. A sample of 23 oil changes showed a mean time of 16.5 minutes and a standard deviation of 4.3 minutes.
the probability of a manufacturing defect in an aluminum beverage can is .00009. if 100700 cans are produced find the
a study was commissioned to investigate the characteristics of properties that are for sale. data was collected on 60
a project team has 5 members whose offices are located in different parts of the building. the chance for each team
What is the probability that none of these crimes will be solved? What is the probability that at least one of these crimes will be solved?
in a combined study of northern pike cutthroat trout rainbow trout and lake trout it was found that 26 out of 855 fish
data from a national survey of college students living away from home indicate that freshman go home an average of 1.7
A multiple regression analysis between yearly income (Y in $1,000s), college grade point average (X1), age of the individuals (X2), Compute the coefficient of determination
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