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A new low-calorie pizza introduced by Pizza Hut has an average of 150 calories per slice.
If this number is based on a random sample of 100 slices, and the population standard deviation is 30 calories, give a 90% confidence interval for the population mean.
The country clerk wants to estimate the protection of retired voters who will need special election facilities. suppose a sample of 400 retired voters was taken. If 150 special election facilities, calculate an 80% confidence for the population pr..
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Explore the airquality dataset available in the datasets library in the ISwR package. a)Display the first 6 rows of the airquality dataset - Create a boxplot which shows the distribution of Ozone in each month.Use different colors for each month.
Write a program to illustrate this result by plotting a bar graph of 1000 samples obtained by forming the ratio of two standard normal outcomes.
How different are the rates of violent crime and rates of crime against property across the 50 states? How are the rates of crime related to spending on criminal justice?
a wildlife study has found that a wolf pack is successful in killing one large animal for every 12 that it chases.a
What is the chance that finishers complete the run with the times between 50 and 70 minutes?
seventy percent of the bicycles sold by a certain store are mountain bikes. among 100 randomly selected bike purchases
Suppose that the risk of allergies for the children of nonsmokers is 0.15. What is the risk of allergies for the children of smokers?
an analyst is testing a two tail hypothesis to determine if the mean housing loan has changed from last years value of
We don't actually need further calculations to compare the effects of the price partitions within regions; everything we need is in Table 1 and Table 2. Using those tables, identify a statis- tically significant difference among the means in the N..
Assume that stock is currently selling for $100. The change in the stock's price throughout the nest year follows a normal random variable with a mean of $10 and a standard deviation of $20.
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