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Question: The exponential distribution has a characteristic that is called the "memoryless" property. This means P(X > x) = P(X > x + x0|X > x0). To illustrate this, consider the calls coming into 911. Suppose that the distribution of the time between occurrences has an exponential distribution with a mean of one half hour (= 0.52).
a. Calculate the probability that no calls come in during the first hour.
b. Now suppose that you are monitoring the call frequency, and you note that a call does not come in during the first two hours. Determine the probability that no calls will come in during the next hour.
A new soft drink is being market tested. A sample of 400 individuals participated in the taste test and 80 indicated they like the taste. At a 5% significance level, test to determine if at least 22% of the population will like the new soft drink.
What is the probability that a randomly chosen acre in Canada is something other than forest or pasture?
Find out the probability that a student from the whole school system, chosen at random, has passed?
Four regions of Yorkshire classify companies according to primary, manufacturing, transport, retail and service. The number of companies working in each region within each category is shown below. Industrial Sources for Consumption and Investment..
In words, what will their hypotheses be?- What would a Type I error be?- What would a Type II error be?- For each type of error, tell who would be harmed.
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During the 2004 election year, new polling results were reported daily. In an IBD/TIPP poll of 910 adults, 503 respondents reported that they were optimistic about the national outlook, and The President's leadership index jumped 4.7 points to 55...
use the following scenario to answer the next 5 questions. millions of americans are subjected to drug testing in the
Using the t tables, software, or a calculator, estimate the critical value of t for a 95% confidence interval with df = 7.
Suppose we analyzed the effect of grade point averages on grades in a specific class and found the results to have an R-aquared value of 0.53. What do we know? Are there other factor, neith or fifty three percent of the variability?
Determine the distribution of the data by using the Goodness of Fit Test - Determine the parameters of the distribution by using the probability plot method.
a manager must decide on the mix of products for the coming week. product a requires three minutes per unit for molding
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