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Based on a study of salaries of man and women who drive expensive cars, a researcher concludes that owning an expensive car can cause people to become wealthier. do you agree with this conclusion
a, no there is no relationship between driving an expensive car and salary
b, no there is no relationship between driving an expensive car and salary, but that does not mean that one causes the other
c, yes people who drive expensive cars look wealthy and wealthy people are likely to get a raise
d, yes people who drive expensive cars do make more money
Three different methods for assembling a product were proposed by an industrial engineer. To investigate the number of units assembled correctly with each method
IQ score in this sample is . If the organization's claim is correct, what is the probability of having a sample mean of or less for a random sample of this size?
a correlation coefficient has an associated probability value of .02 then1. the results are important2. the hypothesis
What is the probability of flipping a coin 6 times and getting 4 or more heads?
To find z-score and required probabilities based on Normal distribution. Assume that childrens weekly allowances are normally distributed in the population.
Assuming the population standard deviation of the amount spent per owner is $12, construct and interpret a 95% confidence interval for the mean amount spent per owner for an obedience class.
The chance the late flight is full is 0.7. The chance both flights are full is 0.6. Can we believe the two flights being full are independent events?
A bowl contains 20 chips, of which 9 are red, 8 are white and 3 are blue. Six chips are taken at random and without replacement. Find the probability that each of the 6 chips is red.
How would you approach identifying the two correct time series in #1 to the proceed to merge them into one and make a weekly estimate of attendance?
It is suspected that the mean turnover has changed and is not 6.0. Use the .05 significance level. State the null hypothesis and the alternate hypothesis.
A. At first glance, does there seem to be a pattern to the relationship between the insurance premiums for males and females? Describe it.
Minutes of activity for lean people gad N(526, 107). Withink what limits do active minutes for about 95% of people in each group fall? Use the 68-95-99.7 rule.
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