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In a survey of 500 U.S. adults, 45% of them said that lounging at the beach was their "Dream Vacation" Assuming this to be a simple random sample of U.S. adults, construct and interpret the 95% and 99% confidence intervals for the proportion of U.S. adults who consider lounging at the beach to be their dream vacation.
question a study wants to determine if taking fish oils can reduce depressive symptoms. a group of 50 volunteers who
Find the probability that the average diameter of those sand dollars is more than 4.13 centimeters. Assume that the variable is normally distributed.
suppose a machines life time in years can be moldeled with an exponential distribution with rate of lambda 14.a.
Use a 0.05 significance level to test the claim that king-size cigarettes with filters have a lower mean amount of nicotine than the mean amount of nicotine in non-filtered king-size cigarettes.
the incomes in a certain large population of college teachers have a normal distribution with mean 75000 and standard
Compute an exponential smoothing forecast with a =.20, an adjusted exponential smoothing forecast with a = .20 and B =.20 and a linear forecast. Compare the three forecast, using MAD and average error (E) and indicate which seem to be most accurat..
Standard deviation of $47.11. Use the normal distribution to estimate the percent of homes selling for more than $280.00.
during a gas leak it is known that there is a 25 risk of developing breathing problems. in the midst of a recent gas
Need help discussing Regression Analysis and Bulgaria. I am conducting a country analysis and need to discuss this. Please cite any references used.
a researcher wishes to estimate the average amount of money a person spends on lottery ticket each month. a sample of
the numbers 8 9 10 and 12 are written on separate pieces of paper and put into a hat. two pieces of paper are drawn at
1. The counselor calculates the unbiased estimate of the population's variance to be 15. What is the variance of the distribution of means?
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