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An individual wanted to determine the relation that might exist between speed and miles per gallon of an automobile. Let X be the average speed of a car on the highway measured in miles per hour and let Y represent the miles per gallon of the automobile. The following data is collected:
X
50
55
60
62
65
Y
28
26
25
22
20
17
15
a. In the space below, draw a scatterplot of the bivariate data set.
b. What is the value for r? Interpret this value, would you say that the correlation is positive or negative? Strong or Weak? How do you know?
c. From the regression equation given above, what value is the slope of the line? Interpret this slope, what does it tell us about the relationship between average speed and miles per gallon?
d. Predict the miles per gallon of a car traveling 63 miles per hour.
e. Predict the average speed of a car whose fuel mileage is 23 miles per gallon.
f. Find r squared. What does this statistic tell us about between average speed and miles per gallon?
The thinking is that differetn networks may affect how they report the news. Calculate a value of chi-sqaure, and determine the conclusion at the 95% level of confidence
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A snack food company that supplies stores in a metropolitan area with "healthy" snack products was interested in improving the shelf life of its tortilla chip product. Determine the upper-tail critical value from the F distribution
The task will take between 8 minutes & 11 minutes. Find this probability. The engineer would also like to know what the time is such that 40% of the task times are less than this value.
Do these measures of central tendency agree? Explain. What could the measures of dispersion tell us about the results of the quiz?
assignment questionsquestion 1a the following data represent the number of years patients survived after being
Consider a major FMCG manufacturer that wishes to add to its range of savoury crisps by introducing a new health food crisp that has added vitamins and minerals.
suppose that z is a random variable with a n0 1 distribution. define a stochastic process via xt ?tz and note that for
What is the probability of the person is 20 to 24 years old.What is the probability of the person is 20 to 34 years old.
In a sample of 200 women, 144 of them said they were in debt. Test the claim that women are in deeper debt than men, at a=0.01.
Sketch the Nyquist plots of the following loop transfer functions L(s) - Gc(s)G(s), and determine whether the system is stable by applying the Nyquist criterion:
The following is an excerpt from a conversation between two employees of Linquest Technologies, Don Corbet and Rita Shevlin. Don is the accounts payable clerk, and Rita is the cashier.
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