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1) Poll done for Newsweek found that 13% of Americans have seen or sensed the presence of an angel. A contingent doubts that the percent is really that high. It conducts its own survey. Out of 100 Americans surveyed, only 3 had seen or sensed the presence of an angel. As a result of the contingent's survey, at a 5% level of significance, would you agree with the Newsweek poll?
In your answer, show your hypothesis your calculated z or t score and your decision to accept or not accept the null hypothesis
2) In a recent sample of 150 used cars sales costs, the sample mean was $6198 with a standard deviation of $2677. Assume the underlying distribution is approximately normal. Find the 98% confidence interval for the population mean.
Show your value for E , and your confidence interval
Can people really identify their favorite brand of cola? Volunteer tasted coca-cola classic, pepsi, Diet coke, and Diet pepsi, with the results shown below.
Find the probability that the first ball drawn is red and the second ball drawn is green. Place your answer, rounded to 4 decimal places, in the blank.
a study of pollutants showed that certain industrial emissions should not exceed 2.5 parts per million. you believe a
Find the probability of exactly 6 Mexican-Americans among 12 jurors.
consider an inventory system in which the sequence of events during each period is as follows.1 we observe the
Providing specific examples, discuss how information contained with the stockholder's equity statement and the cash flow statement can be used for decision-making.
Develop a null and alternative hypothesis for the following situation: Chips Inc. claims that there are more than 25 chips in their bags
to test the efficacy of a new cholesterol-lowering medication 10 people are selected at random. each has their ldl
This question related to Basic Statistics and it is about compute the probability of finding customers who spend between $20 to $35 in a store. The computation has been given in the solution
Answer these three questions and show all your work and use the z-table that is in the back of all statistic book 1) Suppose you know that adult female height is normally distributed and the mean is 65 inches with a std dev of 1.2 inches. What is th..
an experiment can result in one or both of events a and b with the probabilities events a and b with the probabilities
Use the test statistics reported in the table and the rejection region from part e to conduct the test for each of the dependent measures of novelty.
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