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Compute the following .r = correlation between x and y = - 0.7 = mean of the values of x = 50.25 = mean of the values of y = 31.77 = standard deviation of the values of x = 15.85 = standard deviation of the values of y = 1.76 The slope of the least-squares line is ????
Rhode Island Red Chickens the incubation time for Rhode Island Red chicks is normally distributed to find out the number of chicks we expect that will hatch.
Make a decision regarding the null hypothesis based on the sample information. Interpret the results of the test and state your conclusion.
A coin was flipped 60 times and came up heads 36 times. Determine the critical value you would use to test whether proportion of heads is greater than 0.50 at 10% level of significance?
A manager at a local manufacturing company has been monitoring the output of one of the machines used to manufacture small aluminum plates.
The mean number of flaws per 100 m of material produced on a certain machine at Blanktown Fabrics is 2. If flaws occur randomly, find the probability that in 50 m of material there will be less than 2 flaws.
Develop a pie chart to summarize these contributions. Develop a bar chart to summarize these contributions and why is it appropriate to construct a bar chart for these data instead of a histogram?
Z score on comparison distribution for sample score and your conclusion. Suppose that all population are normally distributed.
Average electric use was studied.a previously known population standard deviation was 450KWH. a sample of 81 houses was studied and found to have a mean of 1858 KWH. Find the 95% confidence interval for the true mean.
What does the standard deviation mean? Interpret the standard deviation relative to the average or mean?
Let S be a random variable (not necessarily positive). Prove using Markov's inequality that for every p>0 and for every constant q,
A recent article in Business Week listed the "Best Small Companies." We are interested in the current results of the companies' sales and earnings.
Suppose that you have a bag filled with 50 marbles, 15 of which are green. What is the probability of choosing exactly 3 green marbles if a total of 10 marbles are selected?
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