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A sample of 70 units is selected from a production process that is 1.5% nonconforming. What is the probability that pˆ will exceed the true fraction nonconforming by k standard deviations, where k = 1, 2 and 3?
A researcher wants to know if there is a relationship between the number of shopping centers in a state and the retail sales (in billions $) of that state. What is the equation of the regression line
AP Stats. The College Board reported that 60% of all students who took the 2006 AP Statistics exam earned scores of 3 or higher.
a) What is the mean number of stops per hour? b) What is the standard deviation of stops per hour?
recently a group of adults who swim regularly for exercise were evaluated for depression. it turned out that these
Below, explicitly state slope of your trend line and describe what value of slope signifies in terms of this context.
according to the u.s. bureau of the census 75 of adults regularly drank alcohol in 1985. an investigator predicts that
Calculate a 95% confidence interval for the average lifetime of the washing machines that the company uses. Calculate the sample size required to reduce the margin of error for a 95% confidence interval down to 7 (i.e. E = 7).
Ms. Thompson, can you spare a few minutes of your time to talk about new shelving for your warehouse?
The mean for a set of scores in an entire population is called a population mean; the mean for a sample (or subset of scores from a population).
Do survey participants who have different IT roles (Q1) differ in terms of dimensions of overall measures (Q4-Q7).
Twenty five young people were sampled in a survey to be used in determining the average expenditures (in dollars) for an evening of dining out.Create a cumulative relative frequency Ogive chart.
The probability that the pro shop sells 36 dozen balls is 0.59; otherwise, the pro shop sells 21 dozen balls. What is the standard deviation of the number of balls the pro shop sells in a month? (please round your answer to 2 decimal places)
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