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A new drug is being tested for its effecctiveness to treat a certain type of infection. It was effective for 125 cases out of 175. Give a point estimate for the rate of effectiveness of the new drug for treating this type of infection and also compute the standard error of the estimate.
British airways employs you as cunsultant to analyse the departure time of flight leaving Cape Town International Airport. The acceptance time frame for departures is 0 for on-time plus or minus 15 minutes. During a typical week the following flights..
At the 0.01 level, is the bank loan financially sound (should the bank ask for additional collateral)? What is the decision rule?
The following number of grades were recorded. Find the critical value to determine if the grade distribution for the department is different than expected. Use α = 0.01.
breast-feeding mothers secrete calcium into their milk. some of the calcium may come from their bones so mothers may
Suppose a recent poll of 1,000 people sets forth that 51% of Americans support the U.S. government's "War on Drugs." This poll is shown to have a margin of error of 2%.
The 2010 Chevrolet Camaro with an eight-cylinder engine and automatic transmission has a combined gas mileage of 19 mpg. What percent of all vehicles have better gas mileage than the Camaro?
a automobile manufacturer produces 77 of its cars at plant a. 5 of car made at plant a have a malfuction. what is
For the following investigative scenarios, state the null hypothesis, and the alternative hypothesis. Also identify the Type 1 and Type 2 errors which can result based on the hypotheses that you defined.
What does the binomial distribution chart look like? Can I use Excel to come up with this chart?
question weight watchers take a poll of 250 members and finds that 95 of them include exercise with their diet program
An investment broker reports that the yearly returns on common stocks are approximately normally distributed with a mean return of 12.4 percent and a standard deviation of 20.6 percent.
a study looked at the relationship between condom use and the spread of aids by following heterosexual couples in which
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