Confidence interval for mean of gifts in houses
A random sample of 100 houses show that spent $370 on gifts alt year with a standard deviation of $105. Find 90% confidence interval for mean of gifts in houses.
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The profit on the watch is provided by P = x2 - 13x -80 and where x is number of watches sold per day. How many watches were sold on the day when there was $50 loss.
A corporate board contains 12 members. The board decides to make a five-person Committee to Hide Corporation Debt. Assume four members of the board are accountants. Determine the probability that the Committee will contain two accountants and thre
Poll is 81% of adults say policies require reform. Agency cheks 81% of view on it. Random sample of 500 adults want this out of 425 of them. Test 5% signficance level if curret percentage of adults who think this is need of reform different from 8
Determine system of inequalities which explains possible number of ounces of fish and beef which can be utilized in each can to satisfy seminimum needs. Graph solution set.
When people apply for credit, their credit is rated using scores. The random sample of 20 appplicants for each car loan has mean score of 660.3 and standard deviation of 95.90. Develop a 90% confidence interval for the mean score of the applicants
Supposing that the heights of 3-year old elm trees are normally distributed find a 95% confidence interval for the mean height of 3-year old elm trees.
Angle of elevation to peak is 2,5 Degree. After driving 17 miles closer to mountain, angle of elevation is 9 degree. Determine height of the mountain?
They evaluated that for each 25pesos increase in price, 10 fewer people will come to play. How much must tickets be?"
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