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You are picking a bouquet of 20 flowers for your mother at random from a garden with 25 coneflowers, 35 daisies and 42 lilies. Your mother likes daisies the best and you want to have 15 of those in
James teaches a class of 300 students, and only 6 have done their homework assignment which is due today. He calls on a student at random to put a problem on the board and check to see whether he or
Determine if the following data set is a Population or a sample: the average electric bill for the 50 United States and the District of Columbia?
Create a 95% confidence interval for the percentage of all American adults who favor the death penalty. Show what the error for the confidence interval is also.
How many would you have to survey in order to be at least 95% sure that you find at least 1 who is colorblind? What is the expected value and variance of X?
How many spins should you expect it to take to observe 4 blacks? What is the variance of the number of spins that it takes to observe 4 blacks?
Edward and his friends cannot go outside when it is sunny because they are vampires. Edward's hometown, Forks, Washington is usually very cloudy and rainy, but lately it has been very sunny with an
For your study on the food consumption habits of teenage males, you randomly select 10 teenage males and ask each how many 12-ounce servings of soda he drinks each day.
Consider a random sample of size n from a Bernoulli distribution, Xi ~ BIN(1,p). For a uniform prior density, p ~ UNIF(0,1), and squared error loss, find the following:
Consider a random sample of size n from a Poisson distribution, Xi ~ POI(m).
Consider the following. (Give your answers correct to two decimal places.) (a) Find the standard score (z) such that the area above the mean and below z under the normal curve is 0.3982.
Specimens of blood from 10 different animals were analyzed for blood count, say, Y (in units of 100) and packed cell volume count X (in mm^3) with results as given below. Assuming normality, test th
Find, assuming n=E(Y l X) = B0 + B1X1 the least squares estimates of B0 and B1, and hence the least squares estimates of n. Construct 95% confidence intervals for B0 , B&nbs
It is decided to measure the resistance of sheets of a certain metal at temperatures X of 100 K, 200 K, 300 K, 400 K, and 500 K. The resistances Y are found to be 4.7, 7.4, 12.4, 16.5, and 19.8, res
Determine how many tickets should be sold for a flight on an airplane with 400 seats, such that with probability .95 everybody who appears for the departure of the flight will have a seat. what assu
A set of test scores is normally distributed with a mean of 100 and a standard deviation of 15. If cases are drawn randomly from this distribution, calculate the probabiility of drawing one score be
The return on investments earned by your company for four successive years was 20%, -20%, 50%, and 120%. What is the geometric mean rate of return on the investment?
If Ho: B1 = 0 is not rejected, what is the best estimate for the value of the response variable for any value of the explanatory variable?
What is the best point estimate of the population mean net change in LDL cholesterol after the garlic treatment. Construct a 95% confidence interval of the mean net change in LDL cholesterol after th
Let X and Y be independent and identically distributed random variables with common standard normal pdf of
Using the clues given below, fill in the rest of the joint distribution. There is only one answer.
Type your question here the five summery for production order size (in thousends pounds) for steel tubing is Min=16.5, Q1=32, median=39, Q3=43.5, Max=48.5.
In 2008, a university in the midwestern United States surveyed its full-time first-year students after they completed their first semester. Surveys were electronically distributed to all 3,727 stude
What is the probability that next year the total precipitation for New York State is more than 49.4 inches? What is the probability that next year the total precipitation for New York State is between
Assuming the amount of fill is normally distributed, what is the probability that the next randomly checked bottle contains more than 31.28 oz? (Give your answer correct to four decimal places.)