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An investigator wants to estimate chocolate consumption (dichotomous-eat chocolate or do not) in kindergarten students (just one group). How many students would be required to ensure a 95% confidence interval estimate to be within 5% of the true proportion (E=0.05)? (Hint: If the proportion is unknown, use p=0.5)
a sample of the sales at 50 haute dog restaurants is taken and the sample mean is 30000 per day with a sample standard
Assume the following summary statistics, which describe the speed of a computer processor, are available from a sample of Intel Pentium IV chips manufactured at the company's Arizona chip plant (values are in Megahertz):
which of the 95 confidence intervals below give you justification in thinking that your sample was drawn from a
the director of broadcasting for a cable company took a sample of 522 people. testing was to determine the popularity
a mean guy gave you a nice sample from normal distribution with known variance. so the test should be easy. but he
Interpret the three confidence intervals in terms of whether there is a significant difference between the mean of the sample and a hypothesized mean of 150.
you are an engineer for bulbs lsquor us and youve developed a lightbulb that you claim consumes less than 5 watts per
In all, 53 say "good." Does the poll give reason to conclude that more than half of all seniors think their job prospects are good? The hypotheses for a test to answer this question are?
In the basic economic order quantity (EOQ) model, if monthly demand is a constant 430 units, the order quantity is 144 (12 dozen), and the firm operates during fifty five-day weeks a year, the cycle time will be approximately?
Formulate a payoff table that specifies the contribution to profit (in dollars) from the sale of the tennis shoes by this department store chain for each possible purchase decision.
lies damned lies and statistics is a phrase describing the persuasive power of numbers particularly the use of
standard error for regression equation.1.nbsp ifnbspnbsprnbsp 0.15 find the coefficients of determination and non
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