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The sales of a local grocery chain, since 2008 are:
Year Y Sales ($ millions)2008 122009 92010 72011 132012 13
For full marks use the coded method and round your answer to 1 decimal place.
a) Find the slope for the trend-line.
b) What is the intercept of the trend-line.
c) Determine the least squares trend-line.
What assumption about the population distribution is needed in order to conduct the t test.
If you record data for a year, and find that the mean number of women in shelters is 250, with a standard deviation of 75, and the distribution is normal, answer this. If the city's shelters have a capacity of 350, will that be enough places for the ..
Describe a 5-step hypothesis test for two variances for a particular claim related to your work or life environment. You need to state the claim,
Give a point estimate for the mean amount per customer spent at the supermarket and give a 99% confidence interval estimate for the mean amount per customer spent at the supermarket.
How would to solve this statistics question. In a gallop pill of 1,038 adults ,540 said that second-hand smoke is very harmful. What percentage of adults who said second-hand smoke is very harmful?
Construct a cross tabulation to examine the relationships between the two nominal/ordinal level variables. Assume that you selected a random sample of two hundreds cases and collected data on these cases.
Company reveal that 70% of the workers are married, 36% are college graduates, and half of the college graduates are married. What is the probability that a randomly chosen worker is?
let Xn be number of people selected until first person with non-blue eyes shows up, and let X be number of people select until first person with different eye color to preceding people shows up. Find out E(Xb), E(Xn) and E(X).
Is this a proper probability density function? How do you know? Find the mean, variance, and standard deviation of x, showing your work.
The manufacturer wanted to determine if the tires were exceeding the guarantee. At the .05 significant level, it was concluded that the tires are exceeding the manufacturer's guarantee.
Assuming the term project is there. Given that he searches on disc 1 but cannot find your thesis, what is the probability that your thesis is on disc i for i = 1,2,3,4.
One of the questions asked on the survey to purchasing agents is: Do you think the economy is expanding? Last month, of the 300 responses 160 answered yes to the question.
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