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The approach used in Problem 1(e) led to a disastrous prediction in the 1936 presidential election, in which Franklin Roosevelt defeated Alfred Landon by a landslide. A Landon victory had been predicted by the Literary Digest. The maga- zine based its prediction on the preferences of a sample of voters chosen from lists of automobile and telephone owners.
(a) Why do you think the Literary Digest's prediction was so far off ?
(b) Has anything changed between 1936 and now that would make you believe that the approach used by the Literary Digest would work better today?
Estimate with 95% confidence the mean reduction in time it takes for someone who has taken the sleeping pill to fall asleep.
find the variance and standard deviation of this data set 20 29 25 25 22 11 16 24 show
46. thirty percent of the population in a southwestern community are spanish-speaking americans. a spanish-speaking
a student earns 14 per hour for tutoring and 7 per hour as a teachers aid. let x the number of hours each week spent
What is the differences among a proportion, a percentage, and a ratio? How does a non-parametric business scenario differ from a parametric business scenario?
a tried-and-true revenue stream for large cities has been the funds collected from parkingn meters. in a random sample
Standard deviation of Rs. 1000. assuming the starting salaries follow a normal distribution: What is the probability that the starting salary will be more than Rs. 12000.
At some vacation destinations, "all-inclusive" resorts allow you to pay a flat rate and then eat and drink as much as you want. There has been concern about whether these deals might lead to excessive consumption of alcohol by young adults on spri..
Determine the probability that adult owns stock and has some college education? Determine the probability that adult owns stock or has some college education?
Using a .05 level of significance, test whether the sample results indicate that the manufacturing process is functioning properly.
at a pre-school teachers have found that on average 85 of children will drink milk. in a randomly chosen class of 20
Are there other methods besides ANOVA that can be used to evaluate whether the difference in means between TWO OR MORE samples is significant?
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