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The number of employees on the payroll at a food processing plant is recorded at the start of each month. These data are provided in the attached file. a. Is there a seasonal pattern in these data? If so, how do you explain this seasonal pattern? Also, if necessary, deseasonalize these data using the ratio-tomoving-average method. b. Forecast this time series for the first 4 months of the next year using the most appropriate method. Defend your choice of forecasting method.
A test result x
An elementary school principal would like to know how many hours the students spend watching TV each day. A sample of n = 25 children is selected, and a survey is sent to each child's parents.
The IQ scores of 30 children from under-privileged households, were measured before and a year after, a program of nutritional supplementation was instigated at a primary school.
At the .05 significance level, is there a difference in gas mileage for the different types of gas? Write out your null and alternative hypotheses for the problem and state what the finding means practically.
Determine point estimate of population mean? By using 90% confidence, determine the margin of error?
For binomial distribution among given values for n as well as p state whereas or not it is suitable to use normal distribution as an approximation.
Eestimated values of the dependent variable observed values of the dependent variable and the estimated values of the dependent variable None of these answers is correct.
Use the following data to write the normal equations of the linear regression between Y and X, and find the least squares regression.
The margin of error for polling results is typically determined as the half-width of a 95% confidence interval. With respect to a particular ballot proposition
If np ≥ 5 and nq ≥ 5, estimate P (more than 5) with n=14 and p=0.3 by using the normal distribution as an approximation to the binomial distribution; if np
What is the expected number of Republicans who will win office in the coming election?
A sample of size 9 is drawn at random from a Normal distribution. The experiment has a null hypothesis of μ = 0 and an alternate hypothesis of μ > 0. The mean of the sample is 7 with an s of 8. Is there a difference at the 1% level?
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