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A farmer decides to test the effect of a new feeding regime on his chickens. For the chickens fed on the original regime, the mean weight of 100 eggs is 57.2 g with a standard deviation of 2.1 g. For chickens fed on the new regime, the mean weight of 100 eggs is 57.7 g with a standard deviation of 2.3 g. What is the probability that there could be that difference or more in the means of the two samples if the new feeding regime was ineffective?
A recent poll of 700 people who work indoors found that 278 smoke. If the researchers want to be 98% confident of their results to within 3.5 percentage points, how large a sample is necessary?
the monthly incomes for 12 randomly selected people each with a bachelors degree in economics are shown on the
question 1 twenty-one homes with living areas under 2000 sq ft have selling prices with a standard deviation of
What kind of analysis should he choose to analyze the data from this study
a study of math 1530 students on the first day of class asked the question how many pairs of shoes do you own?here is
A group of people had their body fatness measured. The mean and standard deviation was 38% ± 4%. If there was a measurement error and the heaviest person went from 40% fat to 50% fat, what would happen to the median?
Can they then conclude that there is 95% confidence that all 10 of their confidence intervals will include the corresponding population mean differences?
To do this, he selects 16 bags of tortilla chips of this brand at random and determines the net weight of each. He finds a sample mean of 13.88 oz. with a standard deviation of s = 0.24 oz.
Suppose that the value of p81 increases by 10% while all other mortality rates remain unchanged. What is the new present value of the contract?
This problem related to Basic Statistics and it is about computing the probability of drawing a green ball from a bag of colored balls
Suppose that a certain college class contains 45 students. Of these, 26 are sophomores, 25 are chemistry majors, and 7 are neither. A student is selected at random from the class.
Translate the following statements into symbolic form using capital letters to represent affirmative English statements.- JP Morgan's getting another bailout implies that Goldman Sachs cheats its clients, given that Bank of America's foreclosing on..
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