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A sample of 35 workers was randomly selected from a workforce of 110 to estimate the average amount spent weekly at a canteen by each worker. The sample mean was $13.00 and the sample standard deviation was $3.25.
The canteen owner argues that the average amount spent by each worker per week is $10.00, test at 5% significance level the claim of the canteen owner.
If no payments are made, a loan of amount $44000 would increase to $49103.89 after 2 years of monthly compounding interest.
As a percentage of an arbitrary starting amount, about how large would transaction costs have to be to make triangular arbitrage between the exchange rates
If the null hypothesis is "the stadium is structurally sound," and the alternative hypothesis is "the stadium is not structurally sound," which type of error (Type I or Type II) would the engineer least like to commit?
How many ways can this happen if one person will win a new pencil, another will win a trip to McDonalds, another will win a weekend in Chicago, and the final prize is an automatic 4.0 in Math class.
The sample standard deviation is 10 lbs. We would like to decide if there is enough evidence to establish that the average weight for the population of lawnmowers is greater than 100 lbs.
A magazine publisher tells potential advertisers that the mean household income of its regular readership is $61,500. An advertising agency wishes to test.
If this number was obtained based on a random sample of 8,000 electricity users, give a 95% confidence interval for the proportion of users of solar energy.
1. Briefly discuss the purpose of the Sixteenth Amendment. 2. Explain the two "safe harbors" available to an Individual taxpayer to avoid a penalty for underpayment of estimated tax.
A bus stops at a stop hourly. The difference of the scheduled time and arrival time is recorded. The difference is denoted by U is uniformly distributed
The time between infection with the AIDS virus and developing AIDS has been estimated to be approximately normal with an average of 8 years and a standard deviation of 2 years. According to the Empirical Rule, what percent of people develop AIDS m..
Coin tossing and the law of averages. The author C. S. Lewis once wrote the following, referring to the law of averages: "If you tossed a coin a billion times.
What is the probability that at least one out of four shots will hit the target?
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