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A recent poll of 700 people who work indoors found that 278 smoke. If the researchers want to be 98% confident of their results to within 3.5 percentage points, how large a sample is necessary?
Determine the mean and the standard deviation of the sample.
What percentage of personal checking account customers carry average daily balances in excess of $800? What percentage of the banks customers carries average daily balances below of $200?
Calculate the Mean, Median, Mode, Range and Standard deviation of this sample. Show Calculations: Use any calculation method desired
Six employees who have formed a car pool. If only four of these employees can drive, how many possible seating arrangements are there for the group?
The CEO of the business has nothing better to do wheras measured the temperatures of 26 department managers 1 to 4 times every day to get a total of 123 measurements.
A graphical presentation may accomplish ALL BUT which of the following objectives? Illustrate the amount of variation in the data.
The length of a particular telemarketing phone call, x, has an exponential distribution with mean equal to 1.5 minutes.
Meagan Dubean manages a portfolio of 200 common stocks. Her staff classified the portfolio stocks by 'industry sector' and 'investment objective. If x is a binomial random variable with n=8 and p=0.6, what is the probability that x is equal to 4?
Consider the experiment of rolling a pair of dice. Suppose that we are interested in the sum of the face values showing on the dice.
He (given that) the true proportion of perfect condition items is only 80% what is the probability that the lot will not be shipped?
Evaluate the factor effects. Find out which factors are significant in explaining yield.
The manager of the Gander Mountain store in Frogtown, IL, believes that his prices for ammunition are lower than the prices of his primary competitor in the hunting equipment market, Cabela's.
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