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The number of requests for assistance received by a towing service is a Poisson process with average of 4 requests per hour*.
a) Compute the probability that exactly ten requests are received during a particular 2 hour period.
b) If the operators of the towing service take a 30 min break for lunch, what is the probability that they do not miss any calls for assistance?
c) How many calls would you expect during their break?
A salesman normally makes a sale (closes) on 80% of his presentations. Assuming the presentations are independent, find the probability of each of the following. a) He fails to close for the first time on his fifth attempt. b) He closes his first p..
The true average gas mileage for this new model, which of the following gives the null and alternative hypotheses that the consumer group should test?
Determine a 99% confidence interval for mean pH in rainfall. How would you distinguish interval?
what is the expected number of claims by males under 25? what is the standard deviation of the distribution. (How to show on excel using binodist formula).
Find the probability of guessing (a) exactly three answers correctly, (b) at least three answers correctly, and (c) less than three answers correctly.
During the last year sales averaged $22,000 per month. Does this indicate that monthly sales have changed (in a statistically significant sense)? Use 0.05. Assume monthly sales are normally distributed.
Conduct a hypothesis test using the .04 level of significance to determine if there is a difference between the population means.
a company pays its employees an average of 15.90 an hour with a standard deviation of 1.50. if thh wages are normally
What arguments can be advanced in favor of treating fixed manufacturing overhead costs as product costs? What arguments can be advanced in favor of treating fixed manufacturing overhead costs as period costs?
the weights of ripe watermelons grown at mr. smiths farm are normally distributed with a standard deviation of 2.7 lb.
Provide calculations to show that the Maximum profit based on the training data is $2.548 Million Provide calculations to show that the profit based on the training data is $0.154 Million, if 100,000 packages are mailed randomly to members.
Compute the overall sample mean, sample variance, and variance of the sample means for each machine. Determine the probability that a single sample mean is below 500 if the process is operating properly for each machine
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