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1) Transportation officials tell us that 90% of drivers wear seatbelts while driving. What is the probability that between 525 and 530 drivers in a sample of 600 drivers wear seat belts?
The answer is 0.0811, but I'm having a hard time figuring out how they got to this answer. If someone can explain their steps to get to this answer, it would be much appreciated! Thanks!
2) The weight of corn chips dispensed into a 12-ounce bag by the dispensing machine has been identified as possessing a normal distribution with a mean of 12.5 ounces and a standard deviation of 0.3 ounce. Suppose 100 bags of chips are randomly selected. Find the probability that the mean weight of those 100 bags exceeds 12.6 ounces.
The answer is approximately 0, but I am also having a hard time getting to the answer.
What percentage of success would you expect for these professional golfers if the putting distance was 10 feet?
Explain can you find out statistical support in this poll for that statement. When it comes to the war in Iraq, among which of the subsiquent statements comes closer to your point of view.
The response variable is the change in cholesterol level after two months of treatment. An analysis of variance will be used to compare the three treatments. What null hypothesis is tested by this ANOVA F-test?
"Do you believe that gun control laws which restrict the ability of Americans to protect their families should be eliminated?"
How should the candidate purchase the five commercials to maximize the estimated number of additional voters?
Determine the least-squares regression equation for y 5 next year's price/earnings ratio estimate as a function of x1 5 annual revenue growth and x2 5 annual earnings per share growth. Interpret each of the partial regression coefficients.
What would be the critical value under the null hypothesis if the size of your test were 5%?
Commercial A was selected by 60 women and by 63 men. Find the odds of selecting Commercial A for the men. Do the same for the women.
a recent study focused on the number of times men and women send a twitter message in a day. the information is
Construct a 95% confidence interval estimate for the population proportion of airline travelers who think that the airline fee that is most unreasonable is additional charges to redeem point/miles.
Identify the level of measurement of the data listed on the horizontal axis in the graph - Which class has the greatest frequency and which has the least frequency?
Barron’s reported that the average number of weeks an individual is unemployed is 17.5 weeks (Barron’s, February 18, 2008). Assume that for the population of all unemployed individuals the population mean length of unemployment is 17.5 weeks and that..
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