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1. If the population mean is 1,247, the population variance is 10,000, and the sample size is 100, what is the probability that X will be less than 1,230?
2. When sampling is from a population with standard deviation C = 55, using a sample of size n = 150, what is the probability that X will be at least 8 units away from the population mean µ,?
3. The Colosseum, once the most popular monument in Rome, dates from about AD 70. Since then, earthquakes have caused considerable damage to the huge structure, and engineers are currently trying to make sure the building will survive future shocks. The Colosseum can be divided into several thousand small sections. Suppose that the average section can withstand a quake measuring 3.4 on the Richter scale with a standard deviation of 1.5. A random sample of 100 sections is selected and tested for the maximum earthquake force they can withstand. What is the probability that the average section in the sample can withstand an earthquake measuring at least 3.6 on the Richter scale?
Which of the following is true regarding ANOVA?
what is the name or notation given to a value for which 61 of the sample data is smaller and 39 of the sample data is
when comparing the variances of two normally distributed populations using independent random samples the correct test
Give an example of a polynomial of a degree 2 that satisfies the following two conditions: (1) the coefficient of x^2 is 1 and (2) the polynomial cannot be factored. Explain why the polynomial cannot be factored.
a hockey team has 6 forwards 4 defensemen and 2 goalies. at any time 3 forwards 2 defensemen and 1 goalie can be on the
The lifetime of a super tough AAA battery is normally distributed wit mean of 28.5 hours and standard deviation of 5.3 hours. For a battery selected at random
The Wall Street Journal recently ran an article indicating differences in perception of sexual harrassment on the job between men and women.
Use an appropriate 95 percent confidence interval to estimate the difference between the mean prices of the two brands of cd players. Do you think that the difference haspractical importance?
question heights of women have a bell-shaped distribution with a mean of 163cm and a standard deviation of 5cm.
rolling dice 25 times gives the below results. using your results find the relative frequency for each of the values 2
She wants to be 95% confident that her estimate is correct. If the standard deviation is $1050, how large a sample is needed to be accurate within $200?
The sample mean life is 5.5 years with a standard deviation of 0.6 years. If you were constructing a 99% two-sided confidence interval estimate, the lower limit would be?
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