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lilipie lilipie
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Posts: 309
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6 years ago
A survey found that 79 of a random sample of 1024 American adults approved of stronger laws to reduce greenhouse gas emissions. Find the margin of error for the 90 confidence interval used to estimate the population proportion.
 
  Give your answer as a percentage.
  A) 2.49 B) 5.43 C) 2.09 D) 21.4 E) 4.56

Q. 2

When 330 college students are randomly selected and surveyed, it is found that 119 own a car. Find a 99 confidence interval for the proportion of all college students who own a car.
 
  A) 0.309 to 0.412 B) 0.299 to 0.422 C) 0.293 to 0.429 D) 0.317 to 0.404

Q. 3

Fifty percent of the people that use the Internet order something online. Find the probability that only four of 9 Internet users will order something online.
 
  A) 0.246 B) 0.444 C) 7.875 D) 0.002

Q. 4

In a survey of 4800 adults from one town, 30 said they had tried some form of alternative medicine. Find the margin of error for the 95 confidence interval used to estimate the population proportion.
 
  A) 0.00975 B) 0.0171 C) 0.0130 D) 0.0150

Q. 5

the year of manufacture of a car
 
  A) ordinal B) ratio C) nominal D) interval

Q. 6

Based on meteorological records, the probability that it will snow in a certain town on January 1st is 0.371. Find the probability that in a given year it will not snow on January 1st in that town.
 
  A) 0.629 B) 1.371 C) 0.590 D) 2.695

Q. 7

A survey of 300 union members in New York State reveals that 112 favor the Republican candidate for governor. Construct the 98 confidence interval for the proportion of all New York State union members who favor the Republican candidate.
 
  A) 0.304 to 0.442 B) 0.308 to 0.438 C) 0.301 to 0.445 D) 0.316 to 0.430
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tinydancer1314tinydancer1314
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Posts: 364
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6 years ago
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Just got PERFECT on my quiz
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