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The registrar of a large university knows that 30% of the students come to college with credit for an advance placement (AP) course. The registrar is going to conduct interviews with students regarding their experiences at the university. Depending on which students are chosen, the proportion of students in the sample that have AP credit may vary. In a sample of 100 students, what is the probability that over 37% of the sample has AP credit?In a sample of 200 students, what is the probability that over 33% of the sample has AP credit?
a random sample of size 36 is selected from a population whose mean is 70 and standard deviation is 6. calculate the
assume that a sample is used to estimate a population proportion p. find the margin of error e that corresponds to the
There is an operator at the center who places 25 outgoing calls in a one-hour period. What is the probability that this operator will get live answers on 7 or more calls?
The tolerance of the automatic filling machine, leads to weights of bags being approximately Normally distributed with standard deviation 5g.
If a random sample of 36 lobster fishermen is selected, what is the probability that their average catch is less than 31.5 pounds? Assume the distribution of the weights of lobster is normal.
Suppose ages for first marriages have normal distribution with standard deviation of four years. Determine the probability that the person getting married for first time is younger than 23 years of age?
a batch of 350 raffle tickets contain four winning tickets.you buy four tickets. what is the probabliltiy that you
A business journal investigation of the performance and timing of corporate acquisitions discovered that in a random sample of 2,863 firms, 848 announced one or more acquisitions during the year 2000.
twenty students agreed to participate in a new type of learning program to increase their typing efficiency. it was
discuss type i and type ii errors in relation to a control chart. what practical implication in terms of process
Using the following data, test the question that an equal number of Democrats, Republicans, and Independents voted during the election. Test the hypothesis at the .05 level of significance.
the average gasoline price of one of the major oil companies has been 3.00 per gallon. because of shortages in
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