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According to a survey 78 % of major US companies electronically monitor their employees. Suppose that 245 such companies are selected independently and at random.
(a) What is the probability that 191 companies in the sample electronically monitor their employees?(b) What is the probability that at most 196 companies in the sample electronically monitor their employees?
Differentiate both sides of the equation from part (a) with respect to x to obtain:
The probability that an individual is left-handed is 0.1. In a class of 30 students, what is the probability of finding at least five left-handers?
A machine that manufactures automobile parts is estimated to produce defective parts 5% of the time. If this estimate is correct, and 9 parts produced by this machine are randomly selected
For sample of size 100, what is the mean and standard deviation of the sample mean.
Find the distribution of profit for a unit price of $500. Use the Decision Table tool to find the best price between $400 and $600 in steps of $25.
Can you conclude that there is a higher proportion of U.S. companies offering high-deductible health insurance plans to their workers in 2006 than in 2005?
A researcher used stepwise regression to create regression models to predict BirthRate (births per 1,000) using five predictors
Fit a least squares trend line to the merger data. What type of trend (linear or curved) might best fit to this time series? Compute the forecast for year 20 based on the trend (linear or curved) that best fits the data?
The unlikelihood of everyone who plays the lottery choosing a correct 6 would be very large indeed. Is this unethical advertising? Is it misleading? is the lottery in general, unethical? Why or why not?
Develop the opportunitiy loss table and compute the expected opportunity loss for each product. Determine how much the firm would be willing to pay to a market research firm to gain better information about future market conditions.
A sample of 10 observations is selected from a normal population for which the population standard deviation is known to be 4. The sample mean is 23. (Round your answers to 3 decimal places.) (a) The standard error of the mean is_____?
If the restaurant stocks 400 hamburgers and 150 chicken sandwiches for a given day, what is the probability that it will run out of hamburgers or chicken sandwiches (or both) that day? Assume that the demand for hamburgers and the demand for chick..
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