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Problem 1
Use four decimal places in your answers for this problem.
Eighteen (18) people in a department of 162 are fully trained in CPR and AED. A person shows signs of a heart attack. Five (5) people respond. What is the probability that NO (0) person who responded is trained to treat the victim? (Show all of your calculations)
Problem 2
Use three decimal places in your answers for this problem.
An airline company claims their arrivals are on time within an average of +/- 5 minutes and a standard deviation of 2.82 minutes; Normally Distributed. You sample 50 arrivals and find an average of 6.3 minutes late. Can you be at least 90% sure that the airline company's claim is correct? (Show all of your calculations)
Would the null hypothesis that the 2007 median household income was $50,000 be rejected at the 10% significance level in favor of the two-sided alternative? (Choose the correct answer)
Suppose that population variances from both kinds of digital cameras are equal, is there evidence of difference in mean battery life between two kinds of digital cameras.
Election-day polls are taken from voting precincts selected because they are believed to be representative of all voters.
What is the 95% confidence interval for the proportion of smokers in the population (to 4 decimals)?
Develop a 95% confidence interval of the difference between the daily population means for the two airports.
Critically discuss the relationship between a sample and the type of population it is taken from? What population factors should be taken into consideration?
A study of injuries to in line skaters used data from the National Electronic Injury Surveillance System, which collects data from a random sample of hospital emergency rooms.
Determine critical value for boundary of the rejection region (i.e., Zα).
Use Random Number Generation (RNG) in Analysis ToolPak of Excel to generate n = 5 observations from the Normal distribution N(20, 5). Construct the 95% confidence interval for μ.
Compute the mean and standard deviation of the scores and use these for the calculations below. Show your calculations on the back of his page.
Using the letter M for male and F forfemale. Define a second sample space S and where the elements represent the number of females selected.
Consider the relationship between yearly wine consumption (litres of alcohol from drinking wine per person) and yearly deaths from heart disease (deaths per 100,000 people) in 19 developed countries.
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