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In a sample of 80 business trips taken by employees in the HR department, a company finds that the average amount spent for the trips was $1580 with a standard deviation of $350. Ina sample of 80 trips taken by the employees in the sales department is $1750 with a standard deviation of $550. When testing the hypothesis that the average amount spent on trips taken by the salesepartment are higher than those taken by the HR department, if the test statistic is 2.33 and the critical value is 1.96 then what is your conclusion concerningthe null hypothesis?
The Statistical Abstract of the United States reports that the mean daily number of shares traded on the NYSE in 2002 was 1441 million.
in a manufacturing process a random sample of 36 bolts manufactured has a mean length of 1.71 inches with a standard
A farm brings 15 tons of watermelon to market. Find a 90% confidence interval for the population mean cash value of this crop. What is the margin of error?
How many gears should be produced in each run at what minimum cost and what is the cycle time?
To investigate this belief, he randomly samples 41 adult women and records their weights. The scores have a mean of 111 lbs. and a standard deviation of 12.4. A local census taken several years ago shows the mean weight of adult women was 115 lbs.
Show formally that to bid one's own value is a dominant strategy in the Vickrey auction - Find the equilibrium strategies. What is peculiar about them?
Assume the data for the three groups are independent and the data are approximately Normal. The P-value is less than 0.01. The correct conclusion is that
What is the probability that exactly 3 members of the committee are Hispanic? (b) What is the probability that 3 or fewer members of the committee are Hispanic?
Capital leases and operating leases are the two classifications of leases described in FASB pronouncements from the standpoint of the lessee.
for 11 repeated independent trials with constant probability of success 0.4 for all trials find the probability of
Write a blues in the aab format about the convict lease system in the south. AAB Blues Format
use normal approximation to estimate the probability of getting exactly 47 girls in 100 births. assume that boys and
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