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Art students are registered for the same class and attend independently of each other.
Student A 80% of the time
Student B 70% of the time
The teacher remembers that on a given day at least one of them is in class. What is the probablity that Student A was in class that day? Answer to 3 decimals.
fourth group was divided into small discussion groups. A high of 10 was possible. A sample of five tests was selected from each group. The test grade results were: At the 0.01 level, what is the critical value?
What is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes?
If the mean number of serious accidents per year in a large factory (where the number of employees remains constant) is five, find the probability that in the current year there will be:
H: μ = 50. A sample of 25 scores is selected and the mean is M = 55.Assuming that the sample variance is s2 = 100, compute the estimated standard error and the t statistic.
kohls candy company developed a new consumer product that is expected to earn 4000 in profit each year if consumer
1.a sample of 50 male and 50 female infants were put on an experimental infant formula. after two weeks the parents of
Suppose that, for our sample, the mean weight is 11 pounds. How con?dent can we be that the population mean is between 10 and 12 pounds?
a the access code for a security system consists of five positions. the first position can be any letter 26 while each
there are three traffic lights between your house and a friends house. as you arrive at each light it may be red r
a tennis player makes a serve 72 percent of the time. suppose the player gets 80 serves in a match.what is the mean and
Let N be number of heads obtained on the ten flips. Determine: If you win $1 each time a head appears and you lose $1 each time a tail appears, is this fair game? Describe.
shade the area that represents the proportion and find the proportiona. propzlt-2.75b. propzgt1.09c.
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