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The assembly consists of two blocks and which have masses of 20 kg and respectively. Determine the speed of each block when descends The blocks are released from rest. Neglect the mass of the pulleys and cords.
The goal at U.S. airports handling international flights is to clear these flights within 45 minutes. Let's interpret this to mean that 95 percent of the flights are cleared in 45 minutes
When no natural gas is present the test is accurate 90% of the time. Find the best set of decision for the landowner to maximize her profit.
How large a sample should we take if we wish the 95% margin of error to be plus or minus $15.00. Assume from previous studies that the standard deviation is $120.
consider a sample of 30 wmu engineering alumni. the population average salary is 55000 and amongst the 30 alumni the
question a statistics instructor is interested in the correlation pearson r between how many hours a student sleeps
compute the sample standard deviation of the following test scores 78787878.what can be said about a data set in which
what condition is necessary in order to use z-test to test the difference between two
q1 a basketball coach claims that by taking a special vitamin a weight lifter can increase his strength. eight
do women tend to marry men of similar intelligence? fifty couples were used to investigate this question. a standard iq
Assume half of the 200 passengers are men. What doorway height satisfies the condition that there is a 0.95 probability that this height is greater than the mean height of the 100 men?
the u.s. post office is interested in estimating the mean weight of packages shipped using the overnight service. they
using the standard normal table find the proportions for the areas listed belowa. the area between z 0 and z 2.13b.
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