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A process for making bearings assumes the diameter of a bearing is normally distributed with an unknown mean and unknown standard deviation. However the process is under control if the mean diameter, μ of a bearing is 0.54 cm. A random sample of 10 bearings had a mean of x ¯= 0.553 and a standard deviation of 0.048.) a) Is the process under control. Explain. b) If σ^2 was known be 0.001, what is the probability that s^2would be equal to ?.048?^2? c) If σ^2 was known be 0.001, what is the probability that s^2would be equal to or less than ?.048?^2? d) If σ^2 was known be 0.001, what is the probability that s^2would be equal to or greater than ?.048?^2?
Let f be a surjection. Then f is an isomorphism iff the order of the element f(a) is equal to the order of the element a , for all a belong to G.
you are designing a basketball court to put in your backyard and you are given 975 feet of fencing. What are the detentions that would maximize the area of the court?
Why would you ever need to choose the more vague description rather than the most precise? Provide at least two examples when you would actually be forced to use a more vague description of the location of an object.
A plane is heading due south with an air speed of 125 mph. There is a constant wind blwoing from the west at 30 mph. Find the plane's ground speed and heading.
For the following curve, find the vector equation of the tangent line at t0, and state the slope of the tangent line at t0. [Note that the slope of a vector v=(v1,v2) is v2/v1].
an input-output matrix for a three-sector economy a simple economy consists of three sectors agriculture a
base elevation of 8700 ft, mountain peak in colorado rises 14407 ft over distance of 15844 ft. find the grade of the peak.
Probability distribution. The high school GPA of applicants for admission to a college program are recorded and relative frequencies are calculated for the categories.
later flying against the wind, the plane travels 690 miles in 3 hours. find the speed of the plane in still air and the speed of the wind?
What is the accounts receivables turnover rate?
a ski lift that runs to the top of a hill has a rise of 1/9. The horizonal distance from the bottom of the lift to the center of the mountain is 7000 feet. How hight is the hill?
Parts being manufactured at a plant are supposed to weigh 40 grams. Suppose the distribution of weights has a Normal distribution with mean 40 grams and a standard deviation 2 grams. Quality control inspectors randomly select 16 parts, weigh each,..
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