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Problem: We survey 84 Iowans and find that 29 of them like the Iowa State Fair. We want to test the hypothesis that 30% of Iowans like the Fair against the alternative that the percentage is higher with α=5%. What is the standard error of the estimate? Explain your solution.
what is the probability that the sample will indicate that Smith will win the election?- what is the probability that the sample will indicate a dead heat (fifty-fifty)?
a simple random sample of 49 8th graders at a large suburban middle school indicated that 82 of them are involved with
A laboratory scale is known to have a standard deviation of = 0.001 gram in repeated weighings. Scale readings in repeated weighings are normally distributed, with mean equal to the true weight of the specimen.
When estimating the mean of a population, how large must the sample be in order that the 95% error margin is 1/8 the standard deviation?
a forester wishes to predict the volume in cubic feet of usable lumber in a certain species of trees from the height in
a researcher is interested in the relationship between the numbers of games won by football teams and the number of
Write a statement that assigns the second item in lstNames to strSelectedName.
State the hypothesis test (with the formula of test statistic) could be used to see if the show-up ratio of people booked tickets is larger than 0.7.
With more then a million teachers set to retire we are seeing a record number of turnovers in the teaching profession.
Vote in favor of ABC in the elections. Derive a 95 % confi dence interval for the mean proportion of voters in Sile who will vote for ABC in the coming elections.
the probability that a person in the united states has type o blood is 40. three unrelated americans are selected at
How much time does it take to travel to work? Table shows the mean commute time by state for workers at least 16 years old who are not working at home.
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