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In a survey of 1002 people, 701 (70%) said that they voted in the last presidential election (based on data from ICR Research Group). The margin of error for this survey was 3 percentage points. However, actual voting records show that only 61% of eligible voters actually did cast a vote. Does this imply that people lied when responding to the survey? Explain.
Perform the chi-square test for a uniform distribution. At α = . 01, does this sample contradict the assumption that readership is uniformly distributed?
There is concern about the percent of on-time flights. A recent survey of two major airlines yielded the following results. At α = 0.05 test the claim that there is a difference in proportions of on-time flights.
When sampling is from a population with standard deviation µ = 55, using a sample of size n = 150, what is the probability that will be at least 8 units away from the population mean µ?
The Fair Isaac Corporation (FICO) credit rating scores obtained in a simple random sample are listed below:
Critically discuss why the dowload is a continous numerical varaible and critically discuss why the download time is a ratio scaled variable.
according to the university of nevada center for logistics management 6 of all merchandise sold in the united states
one of the largest species of trantulas is the brazilian giant tawny red. a tarantula has two body parts. the anterior
A box has red marbles and blue marbles. The fraction p of reds is unknown. 250 marbles are drawn at random with replacement, and 102 turn out to be red. Estimate p. Attach a standard error to your estimate.
A researcher believes that the ability to identify constellations of stars in the night sky is related to spatial reasoning ability.
Gallons and standard deviation 12 gallons. On a randomly selected day, the probability that the store sells at least 154 gallons is?
It is believed that the number of kilometers driven by a tourist in the program is normally distributed with mean 4,500 and standard deviation 1,800. If a country wants to set the mileage limit at a point such that 80% of the tourists in the progr..
A random sample of 20 single men was asked if they would welcome a woman taking the initiative in asking for a date. What is the probability that
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