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We are studying hypothesis testing. My instructor asked: Once the p-value is determined, how do you decide whether or not your evidence is strong enough? In other words, what is your criteria for rejecting the null hypothesis?
Which of the following is NOT a point estimate?
According to a report released by CIBC entitled "Women Entrepreneurs: Leading the Charge," the average age for Canadian businesswomen in 2008 was 41
A severe storm has an average peak wave height of 16.4 feet for waves hitting the shore. Suppose that a storm is in progress with a severe storm class rating. Let us say that we want to set up a statistical test to see if the wave action (i.e., heigh..
A random sample of customer order totals with an average of $78.25 and a population standard deviation of $22.50. Calculate a 90% confidence interval fro the mean, given a sample size of 75 orders.
4. Each member of a random sample of 15 business economists was asked to predict the rate of inflation for the coming year. Assume that predictions for the whole population of business economists follow a normal distribution with standard deviation 1..
Obtain an output (as in the tutorials).
In the application of an xbar control chart with the usual 3-sigma limits, if the subgroup sample size is increased
Sixty percent of Americans read their employment construct, including the fine print ("Snapshots," usatoday.com, January 20, 2004). Assume that the number of employed who read every word of their contract can be modelled using the binomial distributi..
Calculate the correlation coefficient
A pharmaceutical firm as a sales rep. Your region is Sub-Saharan Africa where you are currently on a visit to assess the growing market potential for your product, a new drug that treats myocardial infarction (aka heart attack, often, the result of a..
In a random sample of 28 sports cars, the average annual fuel cost was$2929 and the standard deviation was $786. Construct a 90% confidence interval for u. Interpret the results. Assume the annual fuel costs are normally distributed.
Describe a normal distribution. What two parameters determine its location and shape and what proportion of trucks can be expected to travel between 80,000 and 120,000 kilometres in the year?
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