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The central limit theorem says if X1...Xn are random sample from unknown distribution with the mean u and variance σ^2, then X(bar) has approximately normal distribution with ( ) mean and ( ) variance if n is sufficiently large.
Statistics and Probability, Statistics
Light travels at 186,283 miles every second. How many feet per hour does light travel? Round one decimal place if necessary.
How can a graph or chart of data help you understand the results? What is a frequency table? Describe an example where a frequency table can be used in life.
Let's pretend that in a hospital, 7% of patients are "high-risk" while the others are "lower-risk". For patients that are high-risk, 75% will be re-admitted within 30 days. For "lower-risk" patients, the 30day re-admitta ...
The sample distribution on individual IQ scores (raw scores) has a sample mean of 100 and a standard deviation of 16. What proportion of the sample mean will fall at or above a mean of 102.56? Round the answers to no mor ...
A coin is flipped five times in an experiment. If x is the number of heads that turn out in the experiment, what is the set of possible values of variable x?
A coin is randomly picked from a collection of 10 coins, the ith coin having a probabiliity i/10 of coming up heads. The coin in then flipped repeatedly until a head appears. Let X be the number of flips necessary. Find ...
If a study was done to measure the total brain volume of patients that had schizophrenia and also of patients that are normal. Table 1 has the total brain volume of the normal patients and table 2 has the total brain vol ...
A test of the null hypothesis H 0 : μ = μ 0 gives test statistic z = -0.58 (Round your answers to four decimal places.) a) What is the P -value if the alternative is H a : μ > μ 0 ? b) What is the P -value ...
In a sample of 41 temperature readings taken from the freezer of a restaurant, the mean is 29.7 degrees and the standard deviation is 2.7 degrees. What would be the 80% confidence interval for the temperatures in the fre ...
In a survey of 100 people, 40 were casual drinkers (event D ), and 60 did not drink (event D ' ). Of the ones who drank, 6 had minor headaches. Of the non-drinkers, 9 had minor headaches. Let D represent set of surv ...
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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