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Question: Historically, the precipitation of July in Twin Cities (in inches) approximately follows a normal distribution with a mean μ = 3.57 and a variance σ2 = 6.14. Would you still consider σ2 = 6.14 a valid value of the variance given that the sample variance for the precipitation of July in Twin Cities during the most recent 30 years is s2 = 11.08?
Estimate the relative risk of neurological impairment for children exposed to secondary smoking, and calculate a 95% con?dence interval for this risk.
Customers arrive at an automated coffee vending machine at a rate of 4 per minute, following a Poisson distribution. What is the average number of people waiting in line?
1.simulate 100 random normal variables with mean 1.5 and standard deviation 2. create a histogram which shows the data
What are common practices in writing literature reviews to avoid because they are forms of plagiarism? What should be done instead? How would you organize your literature before writing a lit review?
A financial institution transfers a large data faile every evening from offices around the world to its San Antonio headquarters. Once the file is received, it must be cleaned and partitioned before being stored in the company's data warehouse.
Forecast the number of deliveries utilizing exponential smoothing constant for different values also compare it. A hospital records the number of floral deliveries its patients receive every day.
Nielsen publishes a weekly ranking of television programs as well as a weekly ranking of four major networks: ABC, CBS, NBC, and Fox. What kinds of decision or actions are based on the Nielsen rankings?
The z-score of 1.33 tells you that Eric's time to get to work is 1.33 standard deviations from the mean.
If we select 84 students (ASSUME INDEPENDENCE), what is the Standard Deviation of the Probability Distribution that would list the number of students.
A large retail corporation plans to sample sales receipts of its meat department to estimate the average size (in dollars) of a customer purchase. Previous analysis suggest that the standard deviation of the purchase amount is approximately $50.72..
In a survey of 500 randomly selected high school students, it was determined that 288 played organized sports. What is the probability that a randomly selected high school student plays organized sports?
The ages of the automobiles are equally distributed among the three categories? what would the results suggest to a tire manufacturer?
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