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An impact test was performed on 20 specimens of PVC pipe. The standard for this material requires that impact strength must be greater than 1.0ft-lb/in. The sample average and standard deviation obtained were 1.25 and 0.25 respectively.
Statistics and Probability, Statistics
Two people agree to meet at a coffee shop. They each independently pick a random moment in time between 8 a.m. and 9 a.m. and show up exactly at their selected time. But they are very impatient, and only stay for 10 minu ...
Ralph and Gina attend differed schools, but each have a GPA of 3.2 The GPA's at each score follow a normal distribution. Ralph's school has a mean GPA of 2.7 and a standard deviation of .25. Gina's school has a mean of 3 ...
In a large university, 68% of students live in dormitories. A random sample of 14 students is selected. What is the probability that the sample contains more than five students who do not live in the dormitories?
Please explain which formula I should use to complete the following probability question: The probability that a family will buy a vacation home in Miami, malibu, or newport is 0.25, 0.10 and 0.35. What is the probabilit ...
An insurance company will pay Dave $220,000 (the market value of the house) should his house be destroyed by fire during the year. In return, Dave pays the insurance company $1280 that year (called the "premium") for tha ...
How do you calculate true population proportion if your defective sample is too small? For example, if you have 50 and defect is 4. Please look below for more details
Assumes the following probability" P(customer make a purchase) = 0.300 P(Customer does not make a purchase) = 1-0.300 Compute the P(1purchase) and enter your answer in 3 decimal places.
Michael invested $1,000 in large U.S. stocks at the beginning of 2012. This investment earned 17.90 percent in 2012, 32.00 percent in 2013, 13.50 percent in 2014, and 3.00 percent in 2015. What return did he earn in the ...
I. A statistics instructor wants to measure the effectiveness of his teaching skills in a class of 66 students ( N = 66). He selects students by waiting at the door to the classroom prior to his lecture and pulling asid ...
A community hospital wants to estimate the body mass index (BMI) of its local population. To estimate the BMI with an error of at most 0.5 at a 95% confidence level, what sample size should they use? The standard deviati ...
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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