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Describe different methods of establishing correlation between variables and provide an example of each.
Discuss the advantages and disadvantages of each method and where each must be applied.
Consider particular circumstances and examples in which a researcher may want to establish correlation.
At 5% level of significance, is there evidence of difference in mean life of bulbs made by the 2 kinds of machines. What is your conclusion?
According to the Sleep Foundation, the average night's sleep is 6.8 hours. Assume the standard deviation is 0.6 hours and the probability distribution is normal. a. What is the probability that a randomly selected person sleeps more than 8 hours?
Use analysis of variance to test any differences in mean glue strengths.
Determine the percent of the days is the price between $38.00 and $40.00?
If 36 women are selected at random, find the mean, and standard deviation, of the population of sample means. Suppose that the sampling is done without replacement and use a finite population correction factor.
A local hardware store claims that the mean waiting time in line is less than 3.5 minutes. A random sample of 20 customers has a mean of 3.7 minutes with a standard deviation of 0.8 minute. If α = 0.05, test the store's claim.
Construct a 98% prediction interval for the selling price of a 4l- year old house having 4500 square feet, 13 rooms, and an attached garage.
What is the probability of a false negative test (the probability that a person having muscular distrophy tests negative)?
White blood cell counts for a group of volunteers before being innoculated, and white blood cell counts for a second group of volunteers after being innoculated.
Write down the name of 4 parts of the regression equation.
Write down the differential equations which describe the probabilistic behavior of the unit in time as a Markov process.
Construct a stem and leaf plot of the income. what do you predict about the shape of the population distribution. complete the following sentence. Fifty percent of the data falls below $ ______.
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