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Assume we know that the probability that a college student owns an iPhone is 0.70. Four students are selected at random (therefore we can assume independence).
a) What is the probability that all of them own an iPhone?
b) What is the probability that none of them owns an iPhone?
A sample of 60 students from a large university is taken. The average age in the sample was 22 years with a standard deviation of 6 years.
For the data giben below, prepare a R-chart. Note that the sample size is three.
if a simple pearson correlation value .685 what percentage of variance is accounted for?a. 69b. 35c. 47d.
the following three questions i.e. questions 1-3 refer to the following informationthe random variable x representing
Compute the test statistic. At 95% confidence using the p-value approach, test to see if taking the course actually increased scores on the driving exam.
suppose that we are testing h0 micro micro0 versus h1 micro gt micro0. calculate the p -value for the following
stephanie robbins is the three hills power company management analyst assigned to simulate maintenance costs. in
Out of 1000 randomly selected people at the DMV, about how many would be expected to have to wait i) between 26.4 and 32.8 minutes? ii) longer than 39.2 minutes.
Suppose the distribution of amounts purchased follows normal distribution. For sample of 50 customers, reply the following questions. Determine the probability the sample mean is at least $25.00?
This exercise is a "what if analysis" designed to determine what happens to the test statistics and interval estimates when elements of the statistical inference change.
How much net revenue does the state expect, on average from each ticket? What is the risk preference of people who play this lottery?
question in each of the following statements identify what is wrong.a. the probability that a randomly selected person
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