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Four inelastic cables are attached to a plate and hold the 1-ft-long spring in compression when no weight is on the plate. There is also an undeformed spring nested within this compressed spring. If the block, having a weight of is moving downward at v = 4 ft/s when it is 2 ft above the plate, determine the maximum compression in each spring after it strikes the plate. Neglect the mass of the plate and springs and any energy lost in the collision.
1. in a random sample of six microwave ovens the mean repair cost was 65.00 and the standard deviation was 11.50.
a survey found that womens heights are normally distributed with mean 63.5in and standard deviation 2.5in. a branch of
Each entry in a table of random digits like Table B has probability 0.1 of being a 0, and digits are independent of each other. What is the probability that a group of ?ve digits from the table will contain at least one 5?
consider the three samples listed in the tablea 135b 06252c 31263obtain the sample mean and the sample standard
Explain the difference between testing a single mean and testing the difference between two means. What two assumptions must be met when one is using z test to test differences between two means?
Change this to the average probability of tossing heads by putting the average number of heads in a fraction over the number of coins you used in your tosses.
Syracuse Roadbuilding Company is considering the purchase of a new tandem box dump truck. The truck costs $95,000, and an additional $5,000 is needed to paint it with the firm logo and install radio equipment.
The poll actually asked several questions. If we wanted to report an error of estimation that would be valid for all of the questions on the poll, what value should we use?
Compute a 90% confidence interval for the population mean, based on the sample 25, 27, 23, 24, 25, 24, and 59. Change the number from 59 to 24
A hotel chain is interested in evaluating reservation processes. Guests can reserve a room by using either a telephone system or an online system that is accessed through the hotel's web site.
What is the probability that none of the lines experiences a surface finish problem in 40 hours of operation. What is the probability that all three lines experience a surface finish problem between 20 and 40 hours of operation.
Decrease your sales price by $5 in order to increase sales by 5,000 units. Which of the above alternatives would your choose to increase profits?
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