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If the fracture strength measurements of glass have a standard deviation of 0.4 thousands of pounds per square inch, how many glass fracture strength measurements should be taken if the sample mean is to be within 0.2 thousands of pounds per square inch with a probability of approximately 0.95?
What is the probability that 25% or fewer male employees will indicate that they have to pick up the slack for moms working flextime?
in random sampling each item or element of the population has an equal chance of being chosen at each draw. a sample is
The MacBurger restaurant chain claims that the waiting time of customers for service is normally distributed, with a mean of 3 minutes and a standard deviation of 1 minute.
Julia's cost for the soft drinks are 55 cents, and she sells them for two dollars. She can expect to sell just as many soft drinks as all food items combined.
How many independent network servers would be needed if each has 99 percent reliability? (b) If each has 90 percent reliability?
Calculate a four-quarter weighted moving average for the number of America Online (AOL) subscribers for the nine quarters of data. The data are reported in thousands.
What control chart(s) would you use for this data and what are the final control limits?
Calculate the correlation between decorating and Christmas enjoyment - Maximize Wayne's studying effectiveness.
You play a game with two possible outcomes. Outcome A has probability 0.4 and outcome B has probability 0.6. When B occurs you win $2.00; otherwise, you lose $1.00. What is your expected value for this game?
Is this enough evidence to support Union's position? Use significance level of a = 0.05. You may suppose the mean annual salaries are normally distributed.
Use the p-value approach and test to determine if the average yearly income of marketing managers in the East is significantly different from the West.
Find the prediction equation for the price of a laptop using rating and features. What is the value of the residual standard deviation?
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