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To study the average amount of debts in Canada, 100 Canadianswere surveyed. The amount of debt of each one wasrecorded. The sample gave an average of 28110 CAD withstandard deviation of 3500 CAD. It is believed that the actualmean value of the debt in Canada is 27500. Given ourdata, we would like to test if the actual mean of debt is higherthan 27500.
(A) State the null and alternative hypotheses and computethe value of the test statistic.
(B) Compute the p-value for this test
(C) Draw a conclusion by comparing the p-value you obtainedin part (B) to α = 0.05.
A basketball player who consistently makes 23% of free throws
A manufacturer of television sets is interested in the effect on tube conductivity of four different types of coating for colour picture tubes. The following conductivity data are obtained.
What are the expected values for each alternative? What decision should be made under expected value? What is the EVPI?
A group of friends gather together to play Monopoly on a Saturday night. Unfortunately, they do not find any dice. They only have a fair coin at hand. Can you help them design a mechanism to sample the numbers one to six with equal probability by onl..
Discuss what we mean by a binomial experiment. As you can see, a binomial process or binomial experiment involves a lot of assumptions! For example, all the trials are supposed to be independent and repeated under identical conditions. Is this always..
Use the hyper geometric formula to find the probability of matching all 5 winning numbers. The lottery commission also pays if a contestant matches 3 or 4 of the 5 winning numbers. Hint: Divide the 32 numbers into two groups, winning numbers and non ..
By using R code, Data on last year's sales ( y, in 100,000s of dollars) in 15 sales districts are given in the file sales. This file also contains promotional expenditures(x1, in thousands of dollars), the number of active accounts(x2), the number of..
Using the information from part by hand, calculate a 90 confidence interval for the difference of the means for the two time periods.
If the budget analyst wanted to build a regression model using only two independent variables to predict nursing salaries, what variables should be used?
Identify the type of observational study (cross-sectional, retrospective, or prospective) described
It has been stated that 75% of the population have a smart phone. If you randomly choose 10 people, what is the probability that at least 9 people will say they have a smart phone?
2. At a school pep rally, a group of sophomore students organized a free raffle for prizes. They claim that they put the names of all of the students in the school in the basket and that they randomly drew 36 names out of this basket. Of the pr..
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