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.
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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.
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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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