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Question: If the null hypothesis is true, the correct conclusion is "cannot reject the null hypothesis." If the alternative hypothesis is true, the correct conclusion is "reject the null hypothesis." Increasing the sample size increases the probability of making the correct conclusion in one of these cases, but not in the other. Your job is to figure out which is which. Here is a hint: The conclusion "cannot reject the null hypothesis" is made as long as the sample proportion falls within a reasonable number of standard errors of the null value. When the null hypothesis is true, does the likelihood of this happening change as the sample size increases? Explain, and use this explanation to determine which conclusion has an increased probability of being made correctly with increasing sample size.
in an experiment to see if aspirin reduces the chance of having a heart attack a placebo isa the place where the
the author recorded actual temperatures along with temperatures that were predicted 5 days earlier. results are listed
sotex productions is doing a spring catalog shoot for a big clothing retailer. they want to show 3 couples boy and girl
The assembly time for a product is uniformly distributed between 6 to 10 minutes.
(The Poisson distribution can be used to approximate the binomial distribution when n is large and p is small-say, p less than 0.1.
Mr X marketing direct for ABC film production believes that the studio upcoming firm has a 70 percentage chance of being hit, a 20 percentage chance of being moderate and 10 percentage chance of being flop. to his opinion,
Let U1 and U2 be independent random variables. Suppose that U1 is χ2 with ν1 degrees of freedom while U = U1 + U2 is chi-square with ν degrees of freedom, where ν > ν1. Then prove that U2 is chi-square random variable with ν - ν1 degrees of freedom.
the following data represent the number of passengers per flight in a sample of 50 flights from wichita kansas to
Test the hypothesis that the average hourly wage for City A is more than $0.50 per hour above the average hourly wage in City B using the following sample data:
The numbers of snake-approach responses after treatment are listed in the table. Name the independent variable and its levels. Name the dependent variable. Compute SStot, SStreat and SSerror.
According to Example 12, a normal distribution with mean 115 and standard deviation 22 hun- dredths of an inch describes variation in female salmon growth in fresh water.
if n28 barxx-bar47 and s2 construct a confidence interval at a 98 confidence level. assume the data came from a
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