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The weight of the cereal in a box is a random variable with mean 12.15 ounces and standard deviation 0.2 ounce. What percentage of the boxes have contents that weigh under 12 ounces? If the manufacturer claims there are 12 ounces in a box, does this percentage cause concern? If so, what two things could be done to correct the situation? Which would probably be cheaper immediately but might cost more in the long run?
in a survey of 1430 undergraduate students 1087 reported that they had one or more credit cards.a. provide a 90
Since purchasing the software the average delivery time over twenty delivery days was 8.6 hours. At the 0.05 level of significance, test whether the software package has reduced the average time it takes to complete deliveries.
What is the appropriate t-test to conduct and should the null hypothesis be rejected
An economics course are independent events, what is the probability that a randomly selected student is registered in either a math course or an economics course?
in a poker game 5 cards are dealt from a standard 52 card deck that has been well shuffled. you are the only player in
Suppose that you want to compare the mean size of health care claims submitted by five groups of policyholders. Ten claims are randomly selected from amongst the existing claims for each of the five groups. The data is shown in the following table..
In random samples of 12 from each of two normal populations, we found the following statistics: Describe what happens when the sample standard deviations get larger.
5 cups of coffee per day with a standard deviation of 1.5. The distribution is normal. What proportion of faculty consume an amount between 4 and 6 cups?
What is them 98% confidence interval for the average number of minutes it takes to create a test question?
Estimate the population mean
1.i plan an experiment to test the latest conflicting diet programs. the factor for diet will involve three different
An overnight express company must include seven cities on its route. How many different routes are possible, assuming that it matters in which order the cities are included in the routing?
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