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In a manufacturing process a random sample of 36 bolts manufactured has a mean length of 3 inches with a standard deviation of .3 inches. What is the 99% confidence interval for the true mean length of the bolt? Please show your work.
a 15 cm3 cylinder contains nitrogen at 70 atm and 20 degrees celsius. this cylinder is placed in a 10000 cm3 evactuated
Set up a proportion and solve it to demonstrate this type of business application. (An example might be 5 hours / $20 = 10 hours / x). Remember that setting the cross products (multiplications) equal, and then solving for x is the way to solve a p..
when a truckload of apples arrives at a packing plant a random sample of 175 is selected and examined for bruises
eu european union countries report that 46 of their labor force is female. the united nations wants to determine if the
a pump is used to raise the pressure of water from 0 psig to 55 psia. how much power in kw will be required to pump
Give a proof by cases that for integers m,n, we have |mn| = |m||n|. Hint: Consider four cases: (1) m ≥ 0 and n ≥ 0, (2) m ≥ 0 and n
The vessel where the second reaction will take place. The times for the two reactions are independent. Find the standard deviation of the time required to complete the process.
That they all had false positive results. Is it unusual to arbitarily choose 3 subjects without replacement and get three results which are all false positive results? Describe.
the probability that a college student is in the normal weight range for hisher height is 0.86. if 20 students are
ann is waiting in line at the dmv. her waiting time is described by the random variable x in minutes with the following
If a difference exists in the means, wage adjustments must be made to bring the lower wages up to the level of the higher ones. Given the sample data on hourly pay below, what adjustments are called for?
1. Our hypothesis test is testing to see if there is a difference in the population mean between two groups. The data for each group has considerable variability. Given that there is considerable variability in the data for the two groups ________..
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