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Out of 1000 people surveyed, 600 belonged to urban areas and rest to rural areas. Among 500 who visited other states , 400 belonged to urban areas. Test 5 % level of significance whether area and visiting other state are dependent.
If the population mean is 36, are the serial killers significantly more introverted at the .05 level? Perform the appropriate one-tailed test.
Now compute the standard deviation for this distribution.
This morning the office you are monitoring has eight office visits on the schedule. What is the probability that
Crete a 90% confidence interval for mean Secchi dish measurement.
Compute the proper measure of association of smoking and lung cancer.
The cheetahs' coach believes that the Rockets' times are normally distributed as well. Construct a 95% confidence interval the Coach to compare the two teams' sprint units.
Develop a multiple regression model with categorical variables that incorporate seasonality for forecasting sales using the last three years of data in the Excel file New Car Sales.
From a previous study, the standard deviation of the ages is known to be 3 years.
mean is calculated for each sample, then the average distance between M and u would be:
As of 2012, the proportion of students who use a MacBook as their primary computer is 0.36. You believe that at your university the proportion is actually greater than 0.36. If you conduct a hypothesis test, what will the null and alternative hypo..
What is 95% confidence interval estimate for average number of years served by all Supreme Court justices?
A normal population has a mean of 60 and a standard deviation of 3. You select a sample of 36. Compute the probability the sample mean is (Round z values to 2 decimal places and final answers to 4 decimal places):
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