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The equation for a regression line predicting the numbers of hours of TV watched by children (Y) from the number of hours of TV watched by their parents (X) is Y=4+1.2X. The sample size is 12.
(a) If the standard of error of b is .4, is the slope statistically significant at the .05 level?
(b) If the mean of X is 8, what is the mean of Y?
Fully charge a 0.330 mF and a 0.650 mF capacitor when they are placed in parallel? How much charge flowed from the battery when the capacitors are placed in series?
Compute an exponential smoothing forecast with a =.20, an adjusted exponential smoothing forecast with a = .20 and B =.20 and a linear forecast. Compare the three forecast, using MAD and average error (E) and indicate which seem to be most accurat..
There are 25 students in a probability class. Assume that there are 365 days in each year, and that the birthrate is constant throughout the year.
What does null hypothesis for repeated-measures hypothesis test state?
questionthe table below gives the quarterly enrollment in a major american business college for the period
Calculate the suitable mean response time from both proposed locations and find out which proposed site must be selected for the new emergency facility.
a control chart for fraction nonconforming indicates that the current process average is 0.03. the sample size is
find the p-value based on a standard normal distribution for the standardized test statistic and provided alternative
Use Excel and determine the number of each type of person that will be needed to complete the job within the allotted time and at minimum cost.
Q. An owner of a chain of stores would like to predict weekly sales based on the number of customers who made a purchase. A random sample of 10 stores were selected. The weekly sales are in thousands of dollars.
What is the standard deviation for the sample proportion? What is the probablily that in this group over 18% of the new cars will be found to have electrical problems?
Nationwide, the average waiting time until a electric utility customer service representative answers a call is 210 seconds. The Gigantic Kilowatt Energy Company randomly sampled 30 calls and found that, on average, they were answered in 183 secon..
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