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The weights of bags of candy are normally distributed with a mean of 28 ounces and a standard deviation of .28 ounce. Bags in the upper 3.5% are too heavy and must be repackaged.
What is the most a bag of candy can weigh and not need to be repackaged?
For a given level of significance, if the sample size is increased: the power of the test will increase we will have more responses to log and calculate it will skew the mean to the right it has no effect on the direct results.
Identifying H0and Hr in ex 5-12 , examine the given statement , then express the null hypothesis H0 and alternative hypothesis H1 in symbolic form.
Assume it is possible to adjust the scales in a linear manner to read Y = aX+b. How should a and b be chosen in order that Y has the same mean but fewer than 2% of the readings of Y exceed 4.2 gm.
What kind of correlation do you expect to find between annual income and amount spent on car? Will it be positive or negative?
which of the following would produce a standard error of 2 points? explain your response.n 25 scores from a population
the makers of mini-oats cereal have an automated packaging machine that can be set at any targeted fill level between
Levels above 200 warrant attention. If 95 teenage boys are examined. How many would you expect to have cholesterol levels greater than 225.
A t-distribution to create 90% confidence interval for population mean. If convenient, use technology to create the confidence interval.
An article in Baltimore Sun claimed that the typical supermarket trip takes a mean of 22 minutes. Suppose that in an effort to test this claim, you select a sample of 50 shoppers at a Baltimore City Giant.
Assume you always reject null hypothesis, regardless of any sample evidence. Determine the probabiliyt of Type II error? P(Type II error).
The firm has already decided that any sample mean below 78 or above 82 will signal the workers that the process is not working properly.
From past experience, a server at a restaurant knows that her tips follow a right-skewed distribution with mean $6 and standard deviation $4.
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