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Question: Suppose a community group wants to convince city officials to put more trash containers on the city streets. They decide to conduct a survey, but rather than a scientifically valid result, they want their results to show that as many citizens as possible want additional trash containers. Give an example of how they could use each of the following to their advantage:
a. Self-selected sample.
b. Deliberate bias.
c. Ordering of questions.
d. Desire to please.
If he were to conduct a second study to reduce the maximum error of estimate to 6, about how many hard drives should he include in his new sample?
These are the winning numbers. To win the lottery, a person must select the correct 5 numbers in the same order in which they were drawn. What is the probability of winning?
Residential real estate in New York rents for an average of $44 per square foot, for a certain segment of the market. If the population standard deviation.
The dot plots at the top of page 414 represent independent samples. Would you tend to reject the null hypothesis that μA = μB? Explain.
Explain how a matched pairs experiment should be conducted to compare left- and right-hand gripping strenghts. Be sure to explain the role of randomization, and why it is important in this experiment.
a random sample has been taken from a normal distribution and the following confidence intervals were constructed using
for boys the average number of absences in the first grade is 15 with a standard deviation of 7 for girls the average
Determine the sign (+ or -) of R based on the direction of the regression line. Determine Correlation Coefficient (R), using the CORREL function and highlighting each column (Profit, Defective).
a special diet is intendend to reduce cholesterol of patients at risk of heart disease. if the diet is effective the
one prominent physician claims that 70 of those with lung cancer are chain smokers. if his assertion is correcta find
suppose you were given the task of estimating the proportion of drivers in troy al who text while they drive. discuss
They also send the upper 2.5% directly to the company without an interview. Based on the data the assumption of a bell-shaped distribution, what score should be used for the two cutoffs?
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