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The following data give the number of hours each of six students in a statistics class spent studying and the students corresponding grades on the midterm exam.
Hours Spent Studying x 1.50 2.75 3 4.5 5.75 6
Grade on Midterm y 54 73 70 82 91 89
Calculate the correlation coefficient r for these data. Round your answer to three decimal places.
fine motor skills were measured in a sample of kindergarteners before and after 6 months of occupational therapy.
An OEM in the automobile industry is considering an improvement in its order processing system with its tier 1 suppliers. Discuss appropriate measures of quality. What are some special and some common causes in this environment?
If this past distribution is a good indicator of future grades, what is the probability of a student receiving a C in the course?
Populations sampled and margins of error. Consider the following two scenarios. Which sample should have the smaller margin of error? Explain your answer
Your instructor will assign a linear programming project for this assignment according to the following specifications. It will be a problem with at least three (3) constraints and at least two (2) decision variables. The problem will be bounded an..
Find the variance of a sum of n randomly and independently selected points from the interval (0, 1).
a certain colege has 490 of the 584 freshman return as sophomores. does this college have a right to brag that it has
If the annual advertising expenditures are known to be normally distributed and the standard deviation of the population (σ) is $750, what would be the 95% confidence interval for the true mean advertising expense?
Assuming that the standard deviation and the normal shape are unchanged, to what level must the mean reduce so that 20 gallons per week is the third quartile rather than the mean?
If probability of getting sample mean x less than unreported sample mean is 0.025, determine value of the unreported sample mean?
it is believed that the median annual starting salary of a freshman engineering graduate is 40000. if we record the
Suppose two cards are drawn at random from the deck with replacement. What is the probability that the second card is a heart, given that the first card is a heart?
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