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Q. A researcher wants to study the effect of regular exercise on cholesterol levels. The researcher compares the cholesterol levels of 50 people who belong to a local gym and exercise regularly with the cholesterol levels of 50 people from the community who did not exercise regularly. The cholesterol levels of the members of the gym were substantially lower. The researcher can conclude that
A.belonging to a gym reduces cholesterol level. B.exercising regularly reduces cholesterol level.
C.members of a local gym who exercised regularly had lower cholesterol levels than those in the community who did not exercise regularly.
Q. All but one of the following statements contain a blunder. Which one does not contain a blunder?
A."There is a correlation of r = 0.54 between the position a football player plays and his or her weight."
B."The correlation between amount of fertilizer and yield of tomatoes was found to be r = 0.33."
C."The correlation between the gas mileage of a car and its weight is r = 0.71 gallon-pounds."
Solve linear program graphically
Describe the sampling distribution of the sample proportion
Describe and analyze your quantitative data and Briefly address the data analysis process.
The accompanying two histograms represent the distribution of acceptance rates (percent accepted) among 25 business schools in 1995. The histograms use different class intervals, but are based on the same data. In each class interval, the left endpoi..
State the values of the coefficient of correlation and coefficient of determination correct to three decimal places
Determine whether the method of delivering teaching influences adherence with antiretroviral therapy.
MATH1550H: Assignment: Question: Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form
A random variable has the density curve as in the graph below. Find The height of the density curve?
MATH1550H: Assignment: Question: A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..
Suppose each employee in the company receives a $3000 raise for next year (each employee's salary is increased by $3000). The interquartile range of the salaries will
Distinct random variable
Evaluate the mean wait time and throughput rate
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