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The average price of the car wash is $5.00. Sample of six car washes averaged $5.70 and had the sample standard deviation of $1.30. Suppose the normal population, use critical value method to test claim at a= 0.05.
Statistics and Probability, Statistics
In a survey of women in a certain country? (ages 20-?29), the mean height was 65.3 inches with a standard deviation of 2.71 inches. Answer the following questions about the specified normal distribution. ?(a) What height ...
An insurance company is selling a perpetuity contract that pays $2,00 monthly. The contract currently sells for $100,000. (a) What is the monthly return on this investment vehicle? (b) if instead the amount of monthly in ...
What type of data values are quantitative and the number of values is finite or countable?
1. A certain compact disc player randomly plays each of 10 songs on a CD. Once a song is played, it is not repeated until all the songs on the CD have been played. In how many different ways can the CD player play the 10 ...
A researcher wants to determine if lead levels are different between the top of a glass of water and the bottom of a glass of water. Many samples of water are taken. From half, the lead level at the top is measured and f ...
Adult male heights X have N(70", 3.3") a.) What percent of adult males are shorter than 63"? b.) What percent of males are taller than 70"? c.) What's the 80th percentile of male heights? Show work
Dr. Garcia has a dream to complete a Ironman triathlon. The race consists of a 2.4 mile swim, a 112 mile bike ride, and a marathon run of 26.2 miles. In training, Dr. Garcia estimates that he can swim at an average pace ...
A potato chip bag filling line is supposed to fill bags with 10 ounces of potato chips(by weight). The line exhibits a historical process standard deviation of .8 ounces. If chips bags are filled in lots of 20, make a 95 ...
You want to you want to estimate the mean weight of quarters in circulation. A sample of 30 quarters has a mean weight of 5.649 grams in a standard deviation of 0.066 gram. Use a single value to estimate the mean weight ...
A forest district has 2 helicopters available for fighting forest fires. Given the following information, what is the probability that no helicopters are available in the event of a fire? P (helicopter 1 functions) = 0.9 ...
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p
Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As
Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int
Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As