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The values of Alabama building contracts (in $millions) for a 12-month period follow.
240 350 230 260 280 320 220 310 240 310 240 230
Construct a time series plot. What type of pattern exists in the data?
Develop three month and four month moving averages for this time series. Does the three month or four month moving average provide more accurate forecasts based on MSE. explain
What is the moving average forecast for the next month
As reported by Runner's World magazine, the times of the finishers in the New York City 10-km run are normally distributed with a mean of 61 minutes and a standard deviation of 9 minutes. Let x be the finishing time for a finisher in the New York ..
a company fills bags with fertilizer for retail sale. the weights of the bags of fertilizer have a normal distribution
A psychologist determined that the number of sessions required to obtain the trust of a new patient is 1, 2, and 3. Let x be the random variable indicating the number of sessions required to gain the patient's trust. The following probability fu..
q1. a random sample of 50 students at the university of florida revealed the mean number of hours slept last night was
In an online survey of 4,001 respondents, 8% were classified as productivity enhancers who are comfortable with technology and use the Internet for its practical value (data extracted from M. Himowitz, "How to Tell What Kind of Tech User You Are,"..
What would be the correct null and alternative hypothesis for the following situation: The sample has a mean of 72.3 mph and a standard deviation of 7.4 mph. Use a 0.05 significance level to test the claim that the mean speed of all cars is greate..
A clothing retailer wishes to investigate the relationship between order size (in dollars) and the level of satisfaction of the customer.
blood type ab is found in only 3 of the populationdagger. if 275 people are chosen at random find the probability of
a researcher obtains an f-ratio with df 2 36 from an independent-measures research study. what is the total number of
the amount spent on their first visit is approximately normal, what is the shape of the sampling distribution of the sample mean that will be used to create the desired confidence interval for μ?
a class containing 15 students 5 of them are females. in how many ways can we select a group of 4 male
edward and his friends cannot go outside when it is sunny because they are vampires. edwards hometown forks washington
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