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The probability that an American CEO can transact business in a foreign language is 0.2. Ten American CEO's are chosen at random. b) what is the probability that at least two can transact business in a foreign language?
Respond to the questions? In other words, what is the probability that the sample proportion p will be at least 75/300 = 0.25?
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.
When modelling E(y) with single qualitative independent variable, number of 0 - 1 dummy variables in model is equal to number of levels of qualitative variable.
In a Sgallop poll of 1012 randomly selected adults, 9% said cloning of humans should be allowed. Use a .05 significance level to the test claim that less than 10% of all adults said that cloning should be allowed.
Bulloch County has never allowed liquor to be sold in restaurants. However in 3 months, county residents are scheduled to vote on a referendum to allow liquor to be sold by the drink.
Enter relative proportions of the 3 samples in order (20,50,30) in "Expected values" area.
A lot of n items comprises k defectives, and m are chosen randomly and inspected. How must the value of m be selected so that probability that at least one defective item turns up is .90?
Here are fifty observations on the weight of tea bags. Create mean, mode and median.
Find out the best predicted household size given that the household discards 5.00 lb of plastic.
How many voters required to be sampled to evaluate the proportion within 0.05 with 95% confidence?
Compute the p-value; and at 95% confidence, test the hypothesis. Assume the population is normally distributed. Compute the test statistic.
Form the cumulative percentage distribution and plan a cumulative percentage polygon.
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