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A sanitation department is interested in estimating the mean amount of garbage per bin for all bins in the city. In a random sample of 40 bins, the sample mean amount was 51.4 pounds and the sample standard deviation was 3.5 pounds. Construct 95% and 99% confidence intervals for the mean amount of garbage per bin for all bins in the city.
What is the lower limit of the 95% interval? Give your answer to three decimal places.
What is the upper limit of the 99% interval? Give your answer to three decimal places
What is the lower limit of the 99% interval? Give your answer to three decimal places.
What is the upper limit of the 95% interval? Give your answer to three decimal places.
1.i wish to find a 95 confidence interval for the mean number of times men change channels with a remote control during
Estimate with 90% confidence the difference in the level of satisfaction with service between the two branches.
A political science professor is interested in finding out whether there is a relation between political affiliation and attitude towards a recent supreme court ruling about challenges to federal affirmative-action programs.
This indicates that about 80 out of 100 similarily constructed intervals would include the population porportion. (true or false)
The average SAT verbal score for students from one high school over the last ten exams
The weight of an almond is normally distributed with mean 0.05 ounce and standard deviation of 0.015 ounce. Find the probability that a package of 100 almonds will weigh between 4.3 and 5.3 ounces.
Bbut only 1 percent of those closed will have something stolen. If a garage is robbed, what is the probability the doors were left open?
a population of 200 voters contains 78 republicans 120 democrats and 2 independents and members of other parties. a
He further recalled that Watson had heard the victim scream "No, Percy!" moments before the tragic murder. Holmes concluded that Major Bretton had killed Davidson. Inductive or Deductive?
Determine whether the given value is a statistic or a parameter. A researcher determines that 42.7% of all downtown office buildings have ventilation problems. Is this a statistic or a parameter; explain your answer.
The lengths of pregnancies are normally distributed with a mean of 264 days and a standard deviation of 25 days. If 100 women are randomly selected, find the probability that they have a mean pregnancy between 264 days and 266 days.
Confidence intervals for the population mean number of that color of M&Ms in a pack. You may assume that the M&M are approximately normally distributed. Which form of the formula did you use and why?
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