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a. Suppose that $126,000 is to be allocated for advertising, research, and investment in the ratio 10:4:2. How much money will be allocated for each?
b. Electric Depot sells boxes of high efficiency light bulbs ($8 box) and switch plates ($10 each). In June, total sales were $42000. Customers bought 5 times as many boxes of light bulbs as switch plates. How many of each did Electric Depot sell?
If a random sample of 10 people found that 9 were pro-life (i.e., 90%), while another random sample of 1000 people from the same population found that 550 were pro-life (i.e. 55%), which would you find to be more significant? Why?
Give an example using either completing the square or the quadratic formula and explain each step as if you were teaching someone who had never used the method before.
The principal randomly selected six students to take an aptitude test. Their scores were: 76.5 85.2 77.9 83.6 71.9 88.6. Determine a 90% confidence interval for the mean score for all students.
In the following example, why would Chebyshev's Theorem be used instead of the Empirical Rule?
A sample of 23 European countries found that variance of life expectancy was 7.3 years. Determine the 95% confidence interval estimate for variance of life expectancy in Europe?
For a normal random variable X with mean 70 and standard deviation 10. Calculate the probability that 60 80}.
What is the probability of randomly selecting a person who is conservative and then selecting from that group someone who is a nursing major?
Standard deviation of sample was $3.53. Determine point estimate of population mean. Determine the 95% confidence interval of population mean. Suppose the variable is normally distributed.
The possible responses to the question "How would you rate our quality of service?" with 1=excellent, 2=good, 3=fair, 4=poor, describes what type of variable?
Use a 95% confidence interval for multiple comparisons. Show your calculation by hand between Monday and Tuesday. Match your answer with Minitab output. Attach Minitab output.
The average speed of greyhound dogs is about 18.8 meters per second. A particular greyhound breeder claims that her dogs are faster than the average greyhound. In a sample of 45 dogs, they ran, on average, 19.2 meters per second with a standard de..
Use traditional hypothesis test approach. Draw a graph showing the test statistic and critical values. Assume the population has a distribution that is approximately normal and that the sample is a simple random sample.
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