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The average public elementary school has 450 students. assume the stand deviation of the distribution is 99. if a random sample of 36 public elementary schools is selected, find the probability that the number of students enrolled is between 445 and 459.
Give an understanding with the difference between a population, a sample, and a sampling distribution. Uus a Java applet and external web sites for comment/reference.
If the true mean for Saturday sales is now $4500, what is the probability of accepting the (false) null hypothesis.
Biting an unpopped kernel of popcorn hurts! As an experiment, a self-confessed connoisseur of cheap popcorn carefully counted 773 kernels and put them in a popper. After popping, the unpopped kernels were counted. There were 86. a) Construct a 90 ..
Given CAPM as the benchmark, is either of the two managers over-performing the market? What if you use the Sharpe Ratio as benchmark? Explain the answer carefully.
For some positive value of Z, the probability that a standard normal variable is between 0 and Z is 0.3770. Find value of Z? For some value of Z, the probability that a standard normal variable is below Z is 0.2090. Find value of Z?
A point estimate for the difference between the mean purchases of the users of the two credit cards is:
Create a 95% confidence interval for the population mean days absent for sickness based on this sample. Select the answer closest to your results.
The manager is concerned that sales are slipping, after taking into account the average value of sales for four consecutive Saturdays being $4800.
Determine the standard error of students that favoured the move.
For thefts involving more than $1,000, there is an inverse relationship between the value of the goods stolen and the length of the prison sentence given to the thief.
Equation of the regression line - Evaluate the equation of the regression line and Find y' when x=47 years.
Find out the correlation among the two variables in the regression. A simple linear regression produced the following computer output.
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