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The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is normally distributed with a mean of 1238 chocolate chips and a standard deviation of 122 chocolate chips. What is the probability that a randomly selected 18-ounce bag of chocolate chip cookies contains fewer than 1300 chocolate chips?
To find the 95 percent confidence interval for the true population mean. From the results below, is it true that 95% of the sample means will fall
assume that a simple random sample has been selected from a normally distributed population and test the given claim.
two parts are assembled. the distributions of x1 and x2 are normal with micro1 20 s1 0.3 and micro2 19.6 s2 0.4.
In the biology class the mean score was 79 with standard deviation 5.
we have given the number of successes and the sample size for a simple random sample from a population. in each case do
Design and First Question on Response Rates for a Mail Survey of Skydivers" (Leisure Science, 1991) tested this theory by experimenting with different cover designs.
in 1999 a sample of 200 in-store shoppers showed that 42 paid by debit card. in 2004 a sample of the same size showed
Three-month period actually exceeds 1.5 days. Would it be reasonable to conclude that the mean amount of unpaid time lost has increased above the previously estimated 1.0 days? Explain.
Diastolic blood pressure are assumed to follow a normal distribution with a mean of 85 and a standard deviation of 12.
assume that team a beats team b in 75 of the nba games they play against each other they play normal nba games i.e. 4
If a person were to guess a number from 1-10, the chance of guessing a 4 would be 0.1. If 5 people were asked to guess a number from 1-10, the chance of guessing a 4 would be 0.5. The chance of 2 people guessing a 4 would be (0.1)(01.)=(0.01), correc..
steps in hypothesis test procedure.provide an outline of the sequence of steps that would take when conducting a
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