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There are 4 samples of 40 individuals each interviewed to find out how often they visit a fast food restaurant in the week. The averages of each sample were 2.5, 3.4, 2.3 and 3.0. If the average is 2.85 and its standard deviation is 50 and we assume that the population is normally distributed.
a) Find the sampling error for each sample
b) Find the standard error
Can researcher conclude that humidity has significant effect on eating behaviour? Use two-tailed test with a = 0.05.
To develop 3-month and 2-month moving average for the time series.The following data represents demand for company ABC's products for the last 10 months.
Determine the range and standard deviation of the times.
Determine the shape of chi-square distribution?
The amounts of money requested on home loan applications at a particular bank follow the normal distribution, with a mean of $80,000 and a standard deviation of $24,000. A loan application is received during the day.
Determine the critical path and project completion time.
Assuming an exponential service rate μ, set this up as a birth and death process and determine the birth and death rates.
Find the asymptotic distribution of the MLE of the indicated parameter and find formulas for approximate standard errors of the MLE.
Make for more scatter plots comparing GDP growth 1970-2000 to corruption, political rights, rule of law, and socio-political instability
The following table is based on information taken from the Medical Practice Characteristics section of the Statistical Abstract of the United States
Create a 99% confidence interval estimate of population mean amount of paint included in a 1 gallon can.
If we select one box of cereal at random from this population, what is the probability that it will weigh less than 915 grams?
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