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1) Assume the random variable x is normally distributed with mean μ =83 and standard deviation σ=44. Find the indicated probability.P(x<76?)
?(Round to four decimal places as? needed.)
2) The amounts a soft drink machine is designed to dispense for each drink are normally? distributed, with a mean of 11.7 fluid ounces and a standard deviation of 0.2 fluid ounce. A drink is randomly selected.
?(a) Find the probability that the drink is less than 11.5 fluid ounces.
?(b) Find the probability that the drink is between 11.2 and 11.5fluid ounces.
?(c) Find the probability that the drink is more than 12.1fluid ounces. Round to four decimal places as? needed.)Can this be considered an unusual? event? Explain your reasoning.
suppose that for a set of numeric data we have the following sample statisticsx with bar on top equal 10y with bar on
for r = 1, 2, 3, .... Also, use this recursion formula and the fact that μ0 = 1 and μ1 = 0 to find μ2,μ3, and μ4, and verify the formula given for α3 in Exercise 35.
The ideal number of children. "What do you think is the ideal number of children for a family to have?" A Gallup Poll asked this question of 1016 arbitrarily chosen adults. Almost half (49%) thought two children was idea suppose that p = 0.49 is e..
Biology and Environmental Science Piers on public beaches are usually supported by widely spread piles or pillars and can extend a thousand feet into the ocean.
The Bureau of Labor Statistics reports that one use of the Consumer Price Index is to periodically adjust the federal income tax structure.
In, addition, the company has decided to purchase at least three of the new Econo-Tankers for use on short-run, low-demand routes. As a final constraint, the conpany deos not want more than half the new models to be Super Tankers.
Evaluate completely the following statement: "The issue is not whether there is variation, but whether the variation is significant". Be specific with data type
Record the length of time spent on the page. Refer to the previous exercise. You also decide to measure the length of time a visitor spends on your page. Give the sample space for this measure.
Use a one-sided, left-tailed hypothesis test to show that there is evidence to suggest the mean width of littlenecks has decreased. Assume the population of littleneck widths is normal and use a = 0.01.
Quarters with weights between 5.550 g and 5.790 g. If 280 different quarters are inserted into the vending machine, what is the expected number of rejected quarters?
The Defense Logistics Agency Land Maritime (DLA L&M) is the premier logistics agency supplying spare parts to the United States warfighter.
1. Given the time series in Exercise 18.65, and using exponential smoothing with a 5 0.5, what would have been the forecast for 2009?
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