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Question: After testing, asphalt shingles are classified as high, medium, or low grade, and different grade shingles are sold under different warranties.
(a) In how many ways can the next 15 shingles be classified into high, medium, or low grade? (Hint. Think of a task consisting of 15 stages, with each stage having 3 outcomes.
(b) How many classifications have three, five, and seven shingles in the high, medium, and low grade categories, respectively?
(c) If the classifications are all equally likely, what is the probability of the event in part (b)?
The frequency distribution below shows the distribution for suspended solid concentration (in PPM) in river water of 50 different waters collected in September 2011.
Normal distribution with average 500 and SD 100. A college wants their students to be in the top 12.5% for verbal aptitude. What minimum qualifying score should they set?
The average time to complete a particular task is stated to be 150 seconds. Which of the following 95% two-sided confidence intervals on the true average time to complete the task rejects this claim?
a shipment of 1000 small lab mice arrives at the animal care facility with a nominal weight of 10 g per mouse. a sample
After reading one of the articles chosen, write five paragraphs of five sentences summarizing the article: Use the following headings:
Suppose that weights of bags of potato chips coming from a factory follow a normal distribution with mean 12.8 ounces and standard deviation .6 ounces.
An n-dimensional Gaussian vector W has a block diagonal covariance matrix where CX is m × m, CY is (n - m) × (n - m). Show that W can be written in terms of component vectors X and Y in the form such that X and Y are independent Gaussian random ve..
You are required to provide a critical evaluation on OLS regression analysis. You should review the relevant literature on research methods, explain the underlying philosophy for this research method
Predicting movie revenue: simple linear regressions. Now let's look at the response variable and its relationship with each explanatory variable.
Is there any evidence to suggest the population variance in height is greater than the company's desired value? Assume normality and use a = 0.01.
a. Construct a time series plot. What type of pattern exists in the data? b. Use exponential smoothing with α = 0.4 to develop a forecast of demand for week 13. What is the resulting MSE?
A Manager needs to decide between two machines to put into market following a Weibull distribution. Machine X test unit cost $3000 with beta=3 and theta=500 Machine Y test unit cost $2000 with beta=3 and theta=400
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