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Starting salaries of 70 college graduates who have taken a statistic course have a mean of $42,823 and a standard deviation of $10,934. Using 99% confidence, find the margin of error and the confidence interval for the mean
Statistics and Probability, Statistics
A sample of 100 people is classified by gender (male/female) and by whether they are registered voters. The sample consists of 80 females and 20 males, and has a total of 60 registered voters. If these data are used for ...
The caloric consumption of 44 adults was measured and found to average 2,113. Assume the population standard deviation is 270 calories per day. Construct confidence intervals to estimate the mean number of calories consu ...
Explain the similarities and differences between "bagging" and "boosting" in predictive analytics.
A particular manufacturing process is known to produce 0.3 proportion defective items. Suppose that a sample of 10 items produced by this process are selected at random. (a) The probability that the sample will contain e ...
In a panel discussion with 3 industry reps, 2 government reps, and 1 association rep, how many ways can they be seated along a row a) With no restrictions (each person can sit anywhere)? b) If the 3 industry reps must si ...
Describe the steps you took. There are 652 males, 396 say they have been to dentist in past year. Give a confidence interval for 90% of the population proportion .
1) Suppose you purchase a 10-year bond with 6.4%annual coupons. You hold the bond for four years, and sell it immediately after receiving the fourth coupon. If the bond's yield to maturity was 5.4% when you purchased and ...
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 company that manufactures gasoline station pumps must ensure that it pumps at least 1 gallon of gasoline 84% of the time. If the population of pump amounts for a particular pump is normally distributed with mean μ and ...
Suppose that, for a given patient, the true EF is 63. Consider the population of EF values that can be estimated on that patient using option II above. That population follows a normal distribution with μ= 63. Find the p ...
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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