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Researchers for the Herbal Medicine Council collected information on people's experiences with a new herbal remedy for colds. They went to a store that sold natural health products. There they asked 100 customers whether they had taken the cold remedy and, if so, to rate its effectiveness (on a scale from 1 to 10) in curing their symptoms. The Council concluded that this product was highly effective in treating the common cold.
a) Identify the W's of these data.
b) Identify the variables, classify each as categorical or quantitative, and specify units if relevant.
c) Are you confident about the Council s conclusion? Explain.
A randomly selected full-grown adult female okapi weighs between 425 and 525 pounds?
What is the probability that a random sample of 49 different one-hour shopping periods will yield a sample mean between 441 and 446 shoppers and what effect will this have on the standard error of the mean?
the estimate of the population proportions is to be within plus or minus .10 with a 95 percent level of confidence. the
Can the value 0.64 be rejected if a survey of 495 homes in Omaha yields 332 with one or more lawn mowers? Use = 0.05.
What z-score bounds middle 95 % of the normal distribution and what z-score is associated with 75th percentile?
The width of the interval without the finite population correction factor is wider than the confidence interval with the finite population correction factor.
Complete the test at the 5% level of significance.
1.a manufacturer receives parts from two suppliers. an srs of 400 parts from supplier 1 finds 20 defective. an srs of
the amounts of money requested on home loan applications at down river federal savings follow the normal distribution
What are some organizational culture issues that management must address as they strive for long-run stability and growth?
Which of the following is not an advantage of using a cluster sample instead of other types of samples?
Suppose you are a researcher who has collected and analyzed a sample of values. When you perform a hypothesis test the p-value is calculated to be 0.051. Would you reject or fail to reject the null hypothesis? Defend your choice.
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