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You have graduated from college and have been working hard to get established in your field. You eventually land a perfect job where you make tons of money. You decide to step up from the 1992 Chevrolet Cavalier that you have been nurturing for a number of years into a more "comfortable" car (a.k.a. more expensive). You decide to give your nephew who just got his drivers license the Cavalier; however, it needs a little work. You do some research and find out that the mean amount of time it takes a mechanic to rebuild a Cavalier transmission is 8.4 hours and a standard deviation of 1.8 hours. Judy warned you in her statistics class that you would never be the same after taking that class. You find yourself thinking...If 40 mechanics are randomly selected, what is the probability that their mean rebuild time exceeds 8.1 hours?
a. 0.8531
b. 0.7285
c. 0.8457
d. 0.9146
ina survey of 3464 adults 1468 say they have started paying bills online in the last year. construct a 99 confidence
the number of chocolate chips in an 18 ounce bag of chocolate chips os approxiamately normally distributed with a mean
Give the conditions necessary for the binomial distribution to apply to a random variable. Give the general formula for the probability of r successes in n trials.
to construct a normal distribution the measurements needed area. the mean and the medianb. the mode and the standard
The quality control engineer for a furniture manufacturer is interested in the mean amount of force necessary to produce cracks in stressed oak furniture.
What is the break-even cost? What is the profit for 75 units of feed sold? How many units must be sold to produce a profit of $1020?
For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing grade is 40 %.
how do you know when to use the minimization and maximization lp
Suppose that the number of babies born during an hour at a hospital's maternity wing follows a Poisson distribution with a mean of 4 per hour.
suppose the counts recorded by a geiger counter follow a poisson process with an average of two counts per minute.a
Imagine there are exactly m opportunities to cross safely by the time the nth shock occurs. What is the probability that the mth opportunity is a close call (that it occurs immediately before the nth shock).
a parcel service randomly selected 48 packages it received. the sample has a mean weight of 18.6 pounds. assume that
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