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A survey of the opinions of property owners about a street widening project was taken to determine whether the resulting opinion was related to the distance of front footage. A randomly selected sample of 100 property owners was contacted and the results are shown below: Front-Footage -- Under 45 feet: 12 (for) 4 (undecided) 4 (against) 45-120 feet: 35 (for) 5 (undecided) 30 (against) Over 120 feet: 3 (for) 2 (undecided) 5 (against) - How many degrees of freedom are there? - What is the critical value at the 5% level of significance? - What is the critical value at the 10% level of significance? - What is the expected frequency for people who are undecided about the project and have property front-footage between 45 and 120 feet? - What is the expected frequency for people who are in favor of the project and have less than 45 feet of property foot-frontage?
Woodco manufactures tables and chairs. Each table and chair must be made entirely out of oak or entirely out of pine. A total of 150 board feet of oak and 210 board feet of pine are available.
Given a normal distribution with a population mean of 100, a standard deviation of 10 and a sample size of n = 25, what is the probability that X is
The national average for the price of a gallon of unleaded regular gas is $1.16. I believe the price is higher in my area of the country. I want to test my claim by randomly selecting gas prices for 25 stations in my area. The following prices are..
Write a sample result section, discussing your data screening activity (this section should be in APA format).
Archaeopteryx is an extinct beast having feathers like a bird but teeth and a long bony tail like a reptile. Five fossil specimens have preserved both the femur and humerus bones. The measurements (in centimeters) for each bone are given below.
If writing scores for population have standard deviation of σ = 20, does sample give adequate evidence to conclude that new composition course has significant effect?
Describe what type of control chart you can use and how do you calculate the control limits to check if the software design process in this organization is in control.
A statistic practitioner working for Major League Baseball determined the probability that the hitter will be out on ground balls is .75. in a game where there are 20 ground balls, find the probability that all of them were out.
If there is an outage, there is a .05 probability that the resulting losses will be very large, approximately $ 80 million in lost earnings. Also, it is estimated that there is a .95 probability of only slight losses of around $ 1 million. What is..
Determine the probability that among 6 companies surveyed at random, number that provide employees 4 weeks of vacation after 15 years of employment.
OHIP records show the average length of stay in Ontario hospitals is 5.4 days. A researcher sampled 125 patient records at US hospitals and found that the mean stay was 4.6 days
Cars pass a certain street location according to a Poisson process with rate λ. A woman who want to cross the street at that location waits until she can see that no cars will come by in the next T time units.
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