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John has taken an SAT test that consists of two sections (verbal and math). He scored 580 on verbal and 610 on math test, respectively. John later learned that the means and standard deviations of the scores for both sections were as follows: Mean = 505 (std = 50) for the verbal section; Mean = 520 (std=60) for the math section. In terms of the standard scores for both sections, the score of which section was better? What are the z-scores for both sections?
Use this information to determine the empirical probability that the next bird to visit the feeding station will be a dove.
Find out a plausible value r for correlation between vehicle weight and miles per gallon (mpg) shown in the scattergram below?
Nine percent of undergraduate students carry credit card balances greater than $7000. Presume 10 undergraduate students are selected randomly to be interviewed about credit card usage.
Plot a scatter diagram of the results with Depth of Water as the independent variable.
Write introduction to STATISTICAL PROCESS CONTROL and Explain the use of SPC tools used at D2D
She asks 10 people how many Standard Deviations songs they know. Her data are:
Determine the probability that gas tank's capacity is above 15.25 gallons?
In exercise identify (a) sample and (b) population. Also, find whether sample is likely to be representative of population.
Fix-It Copiers advertises mean time of 100 minutes for office calls with standard deviation of 25 minutes. What percentages of calls are completed?
Fit a linear regression model for bp against sodium. Do you think this is a model with a good fit? Why?
What would be your best point estimate for average Sales in weeks for which Newspaper advertising were $1 million? What would be an appropriate interval estimate for this?
What is the probability that there will be more than three trucks either being loaded or waiting?
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