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1. Identify a decision process within your work or business interests that could be resolved based on data.
a. Describe the null and research hypotheses.
b. Compute (or use an educated guess for) an appropriate estimate and its standard error.
c. Find a confidence interval.
d. Test the hypothesis.
e. Interpret and explain your results.
Your younger brother comes home one day after taking a science test. He says that someone at school told him that "60% of the students in the class scored above the median test grade." What is wrong with this statement? What if he said "60% of the..
Detremine the mean, standard deviation, and variance for this frequency distribution.
Assume that a hand of 12 cards is dealt from a normal deck of 52 playing cards. What is the probability that of the 12 cards, 3 will be diamonds, 3 will be clubs, 3 will be spades, and 3 will be hearts.
Suppose that 30% of the population has black hair. In a randomly-selected group of six people, how probable is it that
Mean=63.6 Standard deviation=2.5 If 36 data points are arbitrarily chosen, determine the probability that mean is less than 64.
A run chart is developed that confirms process stability. The level of significance is chosen to be 0.01. (a) Is there evidence to suggest that the process average differs from the target value?
Find the expected GPA when SAT = 800. Find E (GPA|SAT = 1,400). Comment on the difference.
Explain why it might be important to look at cancer incidence that is age-adjusted rather than just cancer incidence. Perform simple linear regression on these data and report your finding.
Based on the result, does there to be an overall perception of 1 minute that is reasonably accurate?
How large a sampl.e is needed to estimate the true proportion of home owners who have vegetable gardens to within 4 percentage points with 95% confidence?
An insurance company has determined that each week an average of nine claims are filed in their Atlanta branch. What is the probability that during the next week
In this forum post provide your results also elucidate what they mean in context of your favorite channel. To find 95 percent confidence interval for given data.
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