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The weight of the eggs produced by a certain breed of hen is Normally distributed with mean 65 grams & standard deviation 5 grams.
1) Calculate the probability that a randomly selected egg weights between 62.5 g and 68.75 g. Think of cartons of such eggs as SRSs of size 12 from the population of all eggs.2) Calculate the probability that the mean weight of a carton falls between 62.5 g and 68.75 g.3) Calculate the probability that the weight of the carton is more than 804 grams.4) Did you need to know that the population distribution of egg weighs was Normal in order to complete parts 1 or 2 or 3? Justify.5) Suppose you obtain a carton of eggs that is supposed to be from this type of hen, and only two of the eggs weigh between 62.5 g and 68.75 g. What would you conclude about whether the eggs came from this type of hen? Give appropriate statistical evidence to support your answer.
A study of cardiovascular risk factors compared heavy smokers, light smokers, and nonsmokers. Both men and women were included in the study so that the two factors are smoking level and gender.
510 people were asked which of four fast food restaurant were their favorite. Determine if there is a preference for any one place over any other.
Find the average age at which people will experience their first cardiac incident, given that 17% of all initial cardiac incident victims are younger than 50. Please, interpret the result.
In the sample of 80 students, 9 were found to be overweight. At a= 0.01, is there adequate evidence to reject claim using critical values?
Create by hand decision tree for this problem and then examine decision tree to recognize optimal policy. Use TreePlan to create and solve decision tree.
test null hypothesis: Meu=80 against alternative hpothesis=negative = 80 (alpha =.05). What does this tell you about meu?
Could mud-wrestling be the cause of a rash contracted by University of Washington students in the spring of 1992? Two physicians at the University of Washington health center wondered this when one male and six female students complained of rashes..
An elementary school principal would like to know how many hours the students spend watching TV each day. A sample of n = 25 children is selected, and a survey is sent to each child's parents.
An experiment is designed to test the potency of a drug on 20 rats. Previous animal studies have shown that 10-mg dose of the drug is lethal 5% of the time within the first 4 hours; of the animals alive at 4 hours, 10% will die in the next 4 hours..
Metro Real Estate Association is preparing a pamphlet that they feel might be of interest to prospective homebuyers in the Middletown and Brockton areas of the city.
The computed value of chi-square: Which of the following is true about the F distribution:
When we say we have a confidence level of 95%, what do you think our "margin of error" is? If we move the level of confidence from 95 to 99%, what will happen to our margin of error? What will happen to the width of our confidence interval?
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