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15. Assume that x has a normal distribution with the specified mean and standard deviations. Find the indicated probabilities.
P(2.9<=x<=5) mean =3 and standard deviation =2.2
Use the following information to answer parts b and c. Explain the meaning of the probabilities in the context of this problem.
The length of life of a certain type of refrigerator is approximately normally distributed with a mean of 4.8 years and a standard deviation of 1.3 years.
b. If the appliance is guaranteed for two years, what is the probability that a refrigerator of this type would require replacement under the guarantee.
c. What is the probability that a refrigerator of this type chosen at random will last between 5 and 6 years?
Please provide all steps on how you get the answers.
Explain why there are no individual differences in the numerator and in the denominator of the F ratio.
A customer service center has customers call with questions about the use of a product. The mean arrival rate of customer calls is 20 per hour and follows a Poisson distribution. The mean service rate (how long it takes the call center employee to an..
List all necessary assumptions and indicate which might be suspect. Also perform a non-parametric analysis. Verify your results using SAS - Determine the subset of variables that is selected as best by the forward selection procedure using Fo = 4.2 ..
A graphical method, solve the simultaneous equations - A graphical method, solve the quadratic equation
Which of the approaches will you be most inclined to choose and why?
What would be the appropriate statistical procedure to test the following hypothesis: "Triglyceride values are a good predictor of weight in obese adults." What are the functions of parametric statistical procedures?
The ratio of the two population variances.
question 1you are a data analyst working for the australian petrol pricing commissioner and have been requested to
Filtering and Summarizing Data
Maximize the revenue from the load carried
Using the five steps of hypothesis testing
use the table below for questions 1-4.cust idorder idshipping costdelivery methoddelivery time hrscustomer
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