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1. assume that the probability of conception in any given month among sexually active couples not practicing birth control is constant at 0.20 per month, independent of the number of months the couple has been active. what is the expected waiting time to first birth?
2. a college is planning to subject admitted freshman to " At home test kit for illicit drugs", which has been shown to be fairly reliable, in the sense that 90% of those using drugs test positive, while only 10% of those not using drugs test positive (in your age group). Assume that 20% of the population in your age group actually use illicit drugs. Alas, you test positive. What is the probability that you are truly and fairly busted? What's your probability of using illicit drug without knowing anything else about you ?
What are some ways in which we as researchers can present our data and our findings in a way that can be understood my managers, employees and other stakeholders?
The Better Business Bureau settles 75% of complaints it receives involving new car dealers. Suppose a sample of 160 complaints involving new car dealers is selected. Find the probability that Better Business Bureau settles less than 124 of these com..
The time married men with children spend on child care averages 6.4 hours per week (Time, March 12, 2012). You belong to a professional group on family practices that would like to do its own study to determine if the time married men in your area sp..
Chelsea has decided to order 100 magazines from her supplier. Chelsea pays $2 for each magazine she orders and sells each magazine for $3. Unsold magazines can be returned to the supplier for $0.75.(a) Simulate 1 year (52 Sundays) of operation to cal..
In what order should the cars be processed through the facility that is the most efficient overall - How long from start to finish will it take to complete the processing the five cars?
A small company that makes fiberglass surfboards. The molding process is very tricky, and results in defects exactly 25% of the time, and this probability is independent of how many other defects there have been that week. You attempt to mold exactly..
The number of power outages at a golf course has a Poisson distribution with a mean of 7 outages per year. the probability that there will be between 1 and 2 inclusive power outages in a year is?
Find the probability that the yearly return obtained by investing in common stocks will be higher than the maximum yearly return that might be obtained by investing in tax-free municipal bonds.
The access code for a car's security system consists of Five digits. The first digit cannot be zero and the last digit must be odd. How many different codes are available?
A brand manager is concerned that her brand's market share may be evenly distributed throughout the country. In a survey in which the country was divided into four geographic region, a random sampling of 100 customers in each region was surveyed, wi..
John Smith has developed the following forecasting model: Y=36+4.3X where Y=Demand for K10 air conditioners
The mean sales per customer µ for all of the sales for your company last month is not known. Based on your past experience, you are willing to assume that the population standard deviation of sales, σ, is about $220. If you take a random sample of 10..
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