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A particular candidate claims she has the support of at least 60% of the voters in her district. A random sample of 150 voters yields 87 who support her. The candidate wishes to test her claim at the 0.05 level of significance. Compute the value of test statistic.
2 cards drawn from a 52 but before the second card is drawn you put the first one back and reshuffle the deck. Are the outcomes on the two cards independent and why?
Can the researcher conclude that humidity has a significant effect on eating behavior? Use a two-tail test with α = .05.
According to recent surverys, 53% of households have personal computers. if a random sample of 175 households is selected, what is the probability that more then 75 but fewer than 110 have a personal computer?
Consumption of Saturated Fat: A nutritionist claims that the proportion of females who consume too much saturated fat is lower than the proportion of males who consume too much saturated fat.
The mean daily amount of her tips was $84.85. At the .01 significance level, can Ms. Brigden conclude that she is earning an average of more than $80 in tips?
The upper limit of a 95% confidence interval for the population mean would equal:
A machine cuts circular filters from large rolls of material. If 7.3% of the filters fail to meet specifications, use the normal approximation to the binomial to compute the probability
"Give an example of a statistic that you have heard quoted in the media that you do not believe is accurate either due to bias or other incorrect statistical methods. Describe the relevant population and the source (e.g. newspaper, TV, radio, inte..
Total housing costs as a percent of monthly income, five years ago and now. The information is reported below. Is it reasonable to conclude the percent is less now than five years ago?
What is the probability that a random sample of size 400 will have less than 49% of the people who balance their checkbooks at least once per month?
What is the probability that the mean price for a sample of 30 service stations is within $.03 of the population mean (to 4 decimals)?
Solution utilizing graphical method. Compute the following linear programming problem. Among which of the following points (X, Y) is not a feasible corner point.
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