Reference no: EM13805760
A rancher would like to estimate the average weight pain of the cattle is his herd between the time of purchase and the time he takes them to market. If he selects a sample of size n = 16 animals and finds x-bar = 240 lbs and s = 32 lbs, construct a 95% confidence interval for the true average weight gain per animal. Assume weight gain is normally distributed.
2. An insurance company surveys 25 households at random and finds that the average amount of whole life insurance owned by these 25 households is $60,000 with a standard deviation of $20,000. Assume that the amount of whole life insurance is normally distributed. Find a 95% confidence interval for the true average amount of whole life insurance per household. Interpret your result. Was the assumption of normality necessary? Why or why not?
3. An advertising company wishes to estimate the true average amount of TV viewing time per household. Suppose it wants to estimate the true average viewing time within ±10 minutes and be 99% confident that this is a correct estimate. How many households will have to be part of the sample they select? You may assume that a previous year's sample had a standard deviation of s = 45 minutes.
4. The manufacturer of a small twin-engine jet airplane is concerned about the difference between the thrusts produced by the port (left) and starboard (right) engines. Sixteen aircraft were tested, and the difference between the port and starboard thrusts (in pounds) was recorded for each case as shown here.
-60 30 120 80 -110 20 130 -50
50 -90 40 -70 -90 100 -80 20
Assuming that thrust differences are approximately normally distributed, find a 90% confidence interval for the true average difference between engine thrusts.
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What is the maximum write-off for these purchases
: Sid bought a new $700,000, seven-year class asset on August 2, 2011. On December 2, 2011, he purchased $160,000 of used five-year class assets. If Congress re-enacts additional first-year depreciation for 2011, Sid elects not to take additional first..
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Adjusted gross income for the current year
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Difference between quality management
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The basics of qualitative research
: Create a PowerPoint presentation of 7-8 slides that explains the following: The basics of qualitative research, The basics of quantitative research and The basics of mixed methods research
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True average difference between engine thrusts.
: Find a 95% confidence interval for the true average amount of whole life insurance per household. Interpret your result. Was the assumption of normality necessary? Why or why not?
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These individuals has realized income from reduction in debt
: Sally and Ed each own property with a fair market value less than the amount of the outstanding mortgage on the property and also less than the original cost basis. They each were able to convince the mortgage holder to reduce the principal amount on..
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Briefly summarize what the proposed amendment
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Rules for claiming deductions for business vehicles
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Cost of equity and leverage for the all equity situation
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