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A random sample of size 100 is to be taken from a population that has a proportion equal to 0.35. The sample proportion will be used to estimate the population proportion.
a. Calculate the probability that the sample proportion will be within ±0.05 of the population proportion.
b. Calculate the probability that the sample proportion will be within ±1 standard error of the population proportion.
c. Calculate the probability that the sample proportion will be within ±0.10 of the population proportion.
Internet is 13.4 hours per week, with the sample standard deviation of 6.8 hours. Determine the 95 percent confidence interval for mean time Wired subscribers spend on Internet.
a automobile manufacturer produces 77 of its cars at plant a. 5 of car made at plant a have a malfuction. what is
Suppose a random sample of 25 swatches are selected. What is the probability that the mean of the sample is less than 235 pounds per square inch.
What is the chi-square goodness-of-fit test? What are the differences/similarities between this test and an independent t-test? How do you know when to use one analysis over the other? Show an example.
ABC Inc. and XYZ Co. are the two dominant companies providing chargers, adapters, and other accessories for cell phones.
the following information is collected from students upon exiting the campus bookstore during the first week of
question consider the following relationship between an exposure e and an outcome o as depicted in the below 2x2
Do the above values appear to be in statistical control, justify your answer?
What is the overall response rate for the 8000 names?
for a normal curve with mean 15 and standard deviation 1.5 which of the following parts of the normal curve will have
a researcher is interested in determining the proportion of first year university students who have suffered hearing
Give an example of a function using a set of at least 4 ordered pairs. The domain will be any four integers between 0 and +10. The range will be any four integers between -12 and 5.
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