Claim that the mean of the calculus final
Thirty randomly selected students took the calculus final. if the sample mean was 84 and the sample standard deviation was 12.8. Test the claim that the mean of the calculus final is more than 75. Use a 0.05 significance level.
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A certain brand of candies have a mean weight of 0.8616g and a standard deviation of 0.0518 based on the sample of a package containing 447 candies. The package label stated that the net weight is 381.8g If every package has 447 candies the mean w
Air at -55 F, 4 psia, and M=2.5 enters a constant area isentropic process and leaves the isentropic process at M=0.2 Assuming a calorically perfect, ideal gas determine. The density (lbm/ft^3) of the entering air and the density (lbm/ft^3) of the l
The totals of individual weights of garbage discard by 62 households in one week have a sample mean of 24.443 lb. Assume the population standard deviation of wights is 12.458 lb, Use a 0.05 significance level to test the claim that the population
Determine (a) the average force at the wheels of the cab, (b) the average force in the coupling between the cab and the trailer.
Superkid, finally fed up with Superbully\'s obnoxious behaviour, hurls a 1.95-kg stone at him at 0.547 of the speed of light. How much kinetic energy do Superkids super arm muscles give the stone?
Air at 50 psia and 90 F flows at the rate of 1.6 lbm/s through an insulated turbine. If the air delivers 11.5 hp to the turbine blades, at what temperature does the air leave the turbine?
The totals of the individual weights of garbage discarded by 62 households in one week have a sample mean of 24.443 lb. Assume the population standard deviation of weights is 12.458 lb.
Specifically for this problem consider saturated water vapor at 400°F that is heated at constant pressure until its volume is doubled. Find the final temperature using the three methods noted above.
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