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If Mamma Temte sells he pies for $4 each, what is her expected profit for a day's worth of pies? {Assume that any leftover pies are given away]
Assuming a worst case scenario of 16 male passengers, find the maximum total allowable weight if we want a .975 probability that this maximum will not be exceeded when 16 males are randomly selected
Draw a normal probability plot for the data set derived according to these instructions. SHOW ALL THE CALCULATIONS REQUIRED FOR THIS.
Suppose that 10% of a population is left-handed. What is the probability that in a sample of n=10 individuals,3 or more individuals are left-handed?
Using the definitions from problem 6, define the following terms and how they relate to each other:
Find the z scores that separate the middle 48% of the distribution from the area in the tails of the standard normal distribution
A supermarket receives a shipment of 20,000 cans of beans. The supermarket picks a random sample 100 cans and finds their weights. If the mean of the weights of the cans in the shipment is known to
How many people should she sample to ensure that there is a less than 0.5% chance that over half of the people sampled say they will vote for this party?
Suppose that a company has six plants, which are designated as plant 1, plant 2, ..., plant 6. If sampling occurs without replacement, how many samples of size 3 can be chosen from those plants?
A student earns $14 per hour for tutoring and $7 per hour as a teacher's aid. Let X= the number of hours each week spent tutoring, and y=the number of hours each week spent as a teachers aid. Write
Conduct all 6 steps of an independent-samples t test. Be sure to label all six steps. Report the statistics as you would in a journal article.
What is the treatment degrees of freedom (MST degrees of freedom)? What is the error degrees of freedom (MSE degrees of freedom)? What is the critical value of the F distribution?
Suppose the number of radios in a household has a binomial distribution with parameters n = 12, and p = 80 %. Find the probability of a household having: (a) 7 or 9 radios (b) 7 or fewer radios (c)
Suppose that the number of dice thrown is a binomial random variable with n = 10 and p = 0.98. What is the expected number of spots showing on the thrown dice? Expected number of spots =
The probability that the company will fail within 2 years is 0.5 suppose we follow nine start ups (63 people) for two years and record the number of people whose company fail. Why is the binomial mo
An experimental drug has been shown to be 75% effective in eliminating symptoms of allergies in animal studies. A small human study involving 6 participants is conducted. What is the probability tha
Suppose that X is a geometric random variable. (a) prove that for positive integers n and k, P(X=n+k|X>n)=P(X=k). (b)explain what this result means and why it makes sense for a geometric distribu
A door-to-door residential solar electrical system salesman is required to document four in-home visits each day. Suppose that she has a 25% chance of being invited into any given home(with each hom
Time taken by a randomly selected applicant for a mortgage to fill out a certain form has a normal distribution with mean value 8 min and standard deviation 4 min. If five individuals fill out a for
The cost per item at a supermarket follows an exponential distribution. There are many inexpensive items and a few relatively expensive ones. The mean cost per item is $4.00. What is the percentage
A recent study of cardiovascular risk factors reported that 30% of adults meet criteria for hypertension. If 15 aduts are assessed how many would you expect to meet the criteria for hypertention?
If Stocks 1 and 2 have expected returns of 0.09 and 0.10 per year, respectively, then what is the minimum expected annual return for Stock 3 that will enable Michele to achieve her investment requir
A questionnaire has 10 questions that require a ranking of 1 to 5, 5 being the highest value. The next 10 question requires ranking from 1 to 10, 10 being the highest value. Is it possible to make a
Given the returns and probabilities for the three possible states listed here, calculate the covariance between the returns of Stock A and Stock B. For convenience, assume that the expected returns
What is the value of the mean absolute deviation for the given data? What will be the predicted sales for February of the next quarter?