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Let W be a random variable giving the number of heads minus the number of tails in three tosses of a coin. List the elements of the sample space S for the three tosses of the coin and to each sample point assign a value w of W.
A sample of 500 respondents was selected in a large metropolitan area to determine various information concerning consumer behavior, Among the questions asked was "Do you enjoy shopping for clothing?
A population of 1000 students spends an average of $10.50 a day on dinner. The standard deviation of the expenditure is $3. A simple random sample of 64 students is taken.
As a part of the editorial a random sample of 260 households showed 170 own pets. Does this data disagree with the Pet Food Dealers Association data? Use a 0.05 level of significance.
A pharmaceutical company has developed a screening test for a rare disease that afflicted 2% of the population. Unfortunately, the reliability of this test is only 80%, which means that 20% of the tested will get a false positive.
A random sample of 700 drivers has been taken. What is the probability that between 538 and 546 of the drivers were wearing their seat belts?
Suppose 10 balls, numbered 1-10, are to be distributed randomly into 10 boxes. a) What is the probability all 10 balls are placed into one box? b) What is the probability that no boxes are empty?
How Many M&Ms of each color were eaten?
When water taxi sank in the Baltimore Inner Harbor, an investigation revealed that the safe passenger load for water taxi was 3500 lbs. It was also noted that the mean weight of passenger was assumed to be 140 lbs.
The opportunity to apply ethical theories to the complex issue of ageism
A quality control inspector selects a part to be tested. The part is then declared acceptable, repairable, or scrapped. Then another part is tested. List the possible outcomes of this experiment regarding two parts.
What is the 25th percentile of a chi squared distribution with 20 degrees of freedom? What symbol is used to denote this value?
You want to create a 90% confidence interval for the true average number of yards per game he throws. What is the margin of error for this estimate?
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