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Assume a data set is normally distributed with mean 19 and standard deviation 2.5. If the data set contains 50 data values, approximately how many of the data values will fall within the range 16.5 to 21.5?
question 1 let x yz denote i.i.d. random variables with exp distribution for lambda gt 0. find px lt y zquestion 2
Managerial Report equations and analysis.
In a certain region of the country, average radar echo duration of lightning flashes is .61 sec and a standard deviation of .24 sec. Note, that these are population values. Calculate a 95% (two sided) confidence interval for the true average ..
Identify sample, population, sampling frame (if applicable), and response rate (if applicable). Describe sampling technique (if applicable) or experimental design
Examine the relationship between Traced by MedicalAid. Is there evidence that whether or not a child was traced is independent of whether the mother had medical aid
Festival Histogram: Beginning with in the text on spotting outliers, correct the type in the data as directed - create a separate histogram for each day, Day1, Day2, and Day3, using the hygiene variable for all three days. Include the normal curve
Using regression as the procedure, produce the forecast of weekly sales for the periods Jan 27, 2014 through Jan 19, 2015 - show a graph of the historical and forecasted sales in one graph
Obtain the arithmetic mean
forecasting with time series analysis objective crusty pizza executives have to forecast december sales for the 10
Compute the expected time until the 100 th student arrives. What is the probability that the time between the arrival of the 200th and the 201st student exceeds 2 days?
Do the independent variables correlate statistically significantly and practicallywith the dependent variable and is collinearity between the independent variables a concern?
Calculate the correlation coefficient
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