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A statistics student plans to use a TI-84 Plus calculator on her final exam. From past experience, she estimates that there is 0.92 probability that the calculator will work on any given day. Because the final exam is so important, she plans to use redundancy by bringing in two TI-84 Plus calculators. What is the probability that she will be able to complete her exam with a working calculator? Does she really gain much by bringing in the backup calculator? Explain.
why is a z-score range -3 to 3? if a normal distribution is not assumed can a z-score still be used? why or why
since previous studies have reported that elite athletes are often deficient in their nutritional intake e.g. total
A study was conducted by the U.S. Army to see if applying antiperspirant to soldiers' feet for a few days before a major hike
Compute the probability that neither customer purchases (# purchases = 0), and enter your answer with 3 decimal places.
An ethanol railroad tariff is a fee charged for shipments of ethanol on public railroads. An agricultural association publishes tariff rates for? railroad-car
During a health survey, a poll estimated that 28% of the surveyed people exercise daily and 26% of the surveyed people meditate daily.
Finding the probability that a randomly selected cat will cost more than a randomly selected dog in terms of their annual medical costs.
A research analyst regresses the number of calls for service (Y) on the Fahrenheit temperature at 4:00 in the afternoon (X). The regression equation finds: Y = 62 + 2.4 X with an r 2 of .67
Suppose we estimate a regression of the gallons of paint sold on the price of each gallon and find the following estimated regression line:
She has been a victim of domestic abuse at some point in her life. Find the probability that more than 22 of the women sampled have not been the victim of domestic abuse.
A survey found that women's heights are normally distributed with mean 63.6 in and standard devistion 2.5 in. a branch of the military requires women's heights to be between 58 in and 80 in. What is the percentage of women who meet the height requ..
Calculate the etiologic fraction when the R for disease associated with given exposure is 1.2, 1.8, 3 and 15.
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