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A large trucking from, concerned about safety, wants to estimate the number of miles traveled per day by its drivers. a sample of 64 drivers gave a sample mean 268 ,miles traveled per day, and a sample standard deviation of 17.with 98% confidence. what is the interval in which the population mean miles travel.
The data consists of random sample of 30 households from the 2007 American Community Survey. Construct a frequency distribution and a histogram for each data set.
The average family size was reported as 3.18. A random sample of families in a particular school district resulted in the following family sizes: 5 4 5 4 4 3 6 4 3 3 5 6 3 3 2 7 4 5 2 2 2 3 52
What is an example of a directional alternate hypothesis? What is an example of a non-directional alternate hypothesis?
Its mean is 139 and its standard deviation is 12. Approximately how many terms can you expect to find between the values of 115 and 163?
A wire of length 50 feet is attached to the ground and to the top of an antenna. The height of the antenna is 10 feet larger than the distance from the base of the antenna to the point where the wire is attached to the ground.
Is this statistically significant evidence that the true mean diameter is greater than 20 millimeters? Set up the hypothesis, and enter your P-value below, rounded to four decimal places.
The availability of venture capital provided by big boost in funds available to companies recent years. According to Venture Economics, 2,000 venture capital disbursements were made in 1999.
In studies examining the effect of humour on interpersonal attraction, McGee and Shevlin (2009) found that an individual's sense of humor had a significant effect on how the individual was perceived by others.
Which is the probability of that the median of the sample or average medians be between 320 and 350 minutes?
A recent study stated that if a person chewed gum, the average number of sticks of gum he or she chewed daily was 8. To test the claim, a researcher selected a random sample of 36 gum chewers and found the mean number of sticks of gum chewed per d..
Write the linear regression equation to forecast father's education from mother's education?
Find the expected GPA when SAT = 800. Find E (GPA|SAT = 1,400). Comment on the difference.
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