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Misleading Graphs In 2009 the average earnings of a high school graduate were $32,272. At $62,394, the average earnings of a recipient of a bachelor's degree were about 93% higher.
(a) Construct a misleading graph that a college recruiter might create to convince high school students that they should attend college.
(b) Construct a graph that does not mislead.
The Ministry of Environment, Science and Technology has one of its administrative centers located out of town and the majority of employees drive to work. As part of the Ministry’s ‘green’ policy
the grains composing polycrystalline metals tend to have weights that follow a log-normal distribution. for a type of
Which of the given properties doesn't apply to theoretical normal distribution?
Calculate a 95% upper confidence bound on the mean. Compare this bound with the upper bound of the two-sided confidence interval and discuss why they are different.
The wheeling tire company produced a batch of 5000 tires that includes exactly 200 that are defective. if four tires are randomly selected what is the probability that they are all good?
suppose iq scores were obtained from randomly selected couples. for 20 such pairs of people the linear correlation
Find the values of the correlation coefficient and the coefficient of determination. Find the slope, y-intercept, and equation of the regression line for the data. Plot the points and a graph of the regression line on the same axes.
How many participants need to be enrolled in each group to have 90% chance of detecting a significant difference using a two-sided test with a a= .05 if compliance is perfect?
A stationary store wants to estimate the mean retail value of greeting cards that it has in inventory A random sample of 100 greeting cards. a mean value of 2.55 and standard deviation of 0.44
Using a critical value, test hypothesis at the 1% level of significance.
at a certain university 25 of students support the green party. suppose we take samples of size 100 students and are
At α = 0.05, is the correctness of the prediction different for the two types of cola drinkers?
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