Average cost of living for a family
The average cost of living for a family of 4 in twelve different cities was found to be $65,351 with a standard deviation of $7711. In dollars, what is a 90% confidence interval for the true mean, m?
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Create the cash budget with borrowing needed or repayments for November and December. Create cash receipts schedule first, then the cash payments schedule before preparing Cash Budget.
Develop a 95% confidence interval for p1-p2. The sample statistics listed below are from independent samples.
Assume that the average length of the passenger cars in the United States is 21.4 feet with a standard deviation of 1.3 feet and that car length is normally distributed. Then what percentage of these cars will be between 20 and 22 feet long?
A researcher studying the effect of price cuts on consumers' expectations makes up two different histories of the store price of a hypothetical brand of laundry detergent for the past year.
It is observed that four minutes later, thermometer reads 30° F. Determine thermometer reading 7 minutes after it was taken outside. Write associated differential equation and solve it.
If electricity can be bought for costs of $0.10 per kwh, how many hours per year will solar panels have to operate to make project break even?
The single die is rolled once. You lose $12 if number divisible by 3 turns up. How much must you win if number not divisible by 3 turns up for game to be fair?
Assume you lose $3 if 3 heads appear, lose $2 if 2 heads appear, and win $3 if 0 heads appear. How much must you win or lose if one heads appears for game to be fair.
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