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Your firm, which sells a technologically advanced product directly to consumers, has developed a new website that has a scrolling pop-up that prompts someone browsing your site to call a toll-free number to speak directly to a representative who can answer questions. Requests for information account for 75% of calls, while 15% of calls result in an actual order. Also, 10% of calls involve both information requests and order placement.
What is the probability that a call generated an order and did not request information?
What is the probability that a call generated an order, given that it requested information?
Providing information is costly, and yet generated no revenues. Should you halt this service?
suppose you know there are four letters in a certain password. Also you know three of the four letters but are not certain of the correct order. What is the number of possible passwords you must consider?
question a recent national survey asked adults if they thought the government should continue to fund nasas efforts
Research question : At α = . 01, is degree of certainty independent of credits earned?
the weekly salaries of teachers in one state are normally distributed with the mean of 490 and a standard deviation of
Find the probability taht exactly 6 are satisifed with the airlines. Find the probability that fewer than 4 are satisfied with the airlines. Find the probability that 5 or more are satisfied with the airlines. Find the probability that between 3 a..
Draw a sketch of the standard normal distribution curves, one for the current process and another one for the recentered process. Label the spec limits and shade the area of the curve that corresponds to your answer.
How many Standard Errors is $850 below $900? If we want to test the null hypothesis that the hotline does not reduce costs, what would be the conclusion based on this data?
In checking the quality of the work, she notices that some slight blemishes occasionally are apparent. A sample of 20 pieces of work resulted in the following number of blemishes on each piece:
Which would be inappropriate, and why. Then identify what you think is the best measure of variability to use for your example and explain why you believe it to be better than the others.
A sample of 25 diff. payroll dept found that the employees worked an average of 310.3 days with a std dev. of 23.8 days. what is the 90% confidence interval for the average days worked.
Calculate the arithmetic mean age of the uninsured senior citizens to the nearest hundredth of a year. Identify the median age of the uninsured senior citizens
The mean SAT score in mathematics is 498. The founders of a nationwide SAT preparation course claim that graduates of the course score higher, on average, than the national mean.
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