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The diameter of golf balls have mean 42.67 mm and a standard deviation of 0.24 mm. PGA golf balls come in boxes of 36. Calculate the probability the average diameter of golf balls in the next box is more than 42.73 mm.
There were 1000 more students at the soccer game than nonstudents. Student tickets were $8.50 and nonstudents were $13.25. If the total revenue for the game was $75,925, then how many tickets of each type were sold?
Suppose that during periods of meditation the reduction of a person's oxygen consumption is a random variable having a normal distribution with μ = 37.6 cc per minute and σ = 4.6 cc per minute. Find the probabilities that during a period of medit..
One hundred eight Americans were surveyed to determine the number of hours they spend watching television each month.
Heavy backpacks Ninth-grade students at the Webb Schools go on a backpacking trip each fall. Students are divided into hiking groups of size 8 by selecting.
describe a fictional two-group experiment that could be tested with an independent t-test but violates the assumption
Gallup Poll study. Go to the Gallup Poll Web site at gallup.com/ and find two Gallup Daily Polls that interest you. Summarize the results of the polls giving margins of error and comparisons of interest.
A recent study found that the average age of people who watch the evening news is 39 years old. We suspect that the actual average age is greater than this.
The percentage of protein in a certain brand of dog food is a normally distributed random variable with mean 11.2% and standard deviation 0.6%. The manufacturer would like to state on the package that the product has a protein content of at least ..
1. What do pump manufacturers recommend to users to avoid pump cavitation? 2. Name six rules that will control or eliminate pump cavitation.
Construct a real sequence of 200 coin tosses by tossing a coin or using a random digit table. What is the longest run of heads in your sequence?
Suppose we have the following data: From a normally distributed population we take a sample of size 25, the mean of the sample is 2.2 and the sample standard deviation is 0.42.
What are some experiments for which you might want a lower alpha level (e.g., 0.01) - what are some situations in which you might accept a higher level (e.g., 0.1)?
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