Confidence interval for the mean diameter
Doug needs to construct a 98% confidence interval for the mean diameter of 3 inch schedule 40 drain pipe. He samples 25 pipes at the local home goods store. The sample has a mean of 2.897 inch with a standard deviation of 0.098 inch.
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Josh starts throwing his pitch; we assume that his arm moves in a perfect circular arc, and his arm is 0.7 m long. If he needs to release the ball with a tangential velocity of 35m/s what centripetal acceleration is required to achieve this?
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Knowing that a downward force of magnitude 120 N is applied to block D, determine (a) the acceleration of each block, (b) the tension in cord ABC. Neglect the weights of the pulleys and the effect of friction.
For Sam's project, he wants to determine whether men carry more change than women, at the 0.10 level of significance.To accomplish same, he obtains samples of five men and five women and collects the following data (cents).
A piston-cylinder contains 0.1kg of superheated steam at 180 degrees celsius and 5 bars. What is the final temperature and the change in internal energy for the steam?
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