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Assume that the table below summarizes a survey involving the relationship between living arrangements and grade point average (GPA) for a group of students. If we select a student randomly from this group, what is the probability that the student has a GPA of at least 2.5? What are the odds that the student will have a GPA of at least 2.5?
GPA On Campus At Home Apartment TotalsBelow 2.5 98 40 44 1822.5 to 3.5 64 25 20 109Over 3.5 17 4 8 29Totals 179 69 72 320
two cards are drawn without replacement from a standard deck of fifty-two cards. find the probability of these
Let X be the number of individuals in a simple random sample of size 50 from this population who get some relief by taking ibuprofen, and let pˆ be the sample proportion. Find the probability that the value of p is in the interval
What is its mean and standard deviation? Repeat this exercise for n = 3 and compare your results. Determine the sampling distribution of the mean for samples of size n = 2.
if the probabilities of having a male or female child are both 0.50 find the probability that a familys seventh child
A company has just manufactured 1694 CDs and 376 are defective. If 9 of these CDs are randomly selected for testing, what is the probablity that the entire batch will be accepted?
Suppose you toss ten coins and count the number of heads. What is the probability that the number of heads you count will lie within two standard deviations of the mean?
Assume that a patient is believed to have one of two diseases, denoted by D1 and D2 with P(D1)=0.40 and P(D2)=0.60 and that medical research has determined the probability associated with each symptom that may accompany the diseases.
What is the difference between probability sampling and simple random sampling? Simple random sampling is a type of probability sampling.
1 a random sample of 60 college graduates results in a mean time to graduate of 4.58 years with a standard deviation of
The mean and the standard deviation of a sample of 100 bank customer waiting times are 5.46 and 2.475 minutes, respectively. a) Assuming the distribution is bell-shaped, calculate the waiting time intervals containing 68% and 95% of bank customer w..
The standard deviation of test scores on a certain achievement test is 10.5. A random sample of 150 scores on this test had a mean of 72.8.
suppose x has a geometric distribution with success probability 14 that is pxk 34k-114. find all the medians of
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