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The number of telephone calls coming into a business's switchboard averages 4 calls per minute. Let x be the number of calls received.
Find P(x=0)
questionthis assignment has 4 parts.nbsp save part one as hw5version2.xls then save parts 2 to 4 in a different file
The average fill volume from a random sample of 49 bottles of an energy drink is 32.8 ounces; the standard deviation among the individual fill volumes is3.5 ounces. Determine a 95 percent confidence interval for the mean fill weight.
Using the results, describe the effect of an outlier or extreme value on the confidence interval.
A population of scores has p = 44. In this population, an X value of 40 corresponds to z = - 0.50. What is the population standard deviation.
We want to test the hypothesis that the population variances are equal.
The mean of a normal probability distribution is 60; the standard deviation is 5.
The acceptance rate for applicants with similar qualifications is 30% for University X and 55% for University Y. What is the probability that Jim will be accepted by at least one of the two universities?
A new business with 125 employees is moving into the area. what is the probability that the new employees will consume more than 240 cups of coffee per day.
The mean salary for engineers with less than 5 years' experience is $60,000 with a standard deviation of $5,000. Compute the z values for both 1)Rob and 2)Rachel.
a production process that fills 12-ounce cereal boxes is known to have a population standard deviation of 0.009 ounce.
Standard deviation of 424 and 155 respectively. at the .05 level of significance, test the claim that the new version has standard deviation equal to that of the past version.
Assume rf is 5% and rm is 10%. According to the SML and CAPM, an asset with a beta of -2.0 has a required return of negative 5%[=5-2(10-5)]. Can this be possoble?
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