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A random survey of autos parked in the student lot and the staff lot at a large university classified the brands by country of origin, as seen in the table. Are there differences in the national origins of cars driven by students and staff?
Driver
Student
Staff
Origin
American
107
105
European
33
12
Asian
55
47
a) Is this a test of independence or homogeneity?
b) Write appropriate hypotheses.
c) Check the necessary assumptions and conditions.
d) Find the P-value of your test.
e) State your conclusion and analysis.
a study of religious practices among college students interviewed a sample of 245 students 157 of whom stated they pray
Construct a relative frequency distribution for the weights of regular Coke by starting the first class at 0.7900 lb. and use a class width of 0.0050 lb.
The amount of time a bank teller spends with each customer is normally distributed with a mean of 3.10 minutes and a standard deviation of 0.40 minutes.
Using the 50%-34%-14% figures, approximately what percentage of people have a score a) above 40 b) above 45 c) above 30 d) below 45 g) below 30.
Is this a proper probability density function? How do you know? Find the mean, variance, and standard deviation of x, showing your work.
If 20 customers were selected at random during one business day, what is the probability that at least 11 of them did not order a pastry with their drink.
According to the U.S. Department of Agriculture's World Livestock Situation, the country with the greatest per capita consumption of pork is Denmark.
Utilizing a binominal experiment, that is each trail can be reduced to two outcomes, construct a binomial distribution.
Assuming that the products are similar in all respects, what is the probability that one product out performs the other three in each year of a given three year period?
chi-square test for independence of attributes.an investment portfolio manager categorized her investors as having
Tuition 2008, part 2. Exercise 51 examined the relation- ship between the tuition charged by states for four-year colleges and universities compared to the tuition for two- year colleges. Now, examine the relationship between private and public fo..
One of the most important uses of a correlation is its potential use in_________
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