Mathematics, 29.04.2021 16:30 brodytheforce
HELP!!!
1. The mean score on a national exam is 1,200 with a standard deviation of 230. A college states that their incoming freshmen have higher scores than the national average. In order to confirm the statement, a reporter collects a random sample of scores from 300 incoming students. He finds their mean score is 1,300. Is the college correct?
2. The results reported are based on telephone interviews with a randomly selected national sample of 1,154 adults, 18 years and older. For results based on the whole sample, one can say with 95 percent confidence that the maximum error attributable to sampling and other random effects is plus or minutes approximately how many percentage points?
3. A school newspaper conducted an interview polling how many students have at least one dog at home. If the data they received has a standard deviation of 0.3 and a margin of error of 3%, about how many students were polled?
Answers: 1
Mathematics, 21.06.2019 18:30
The clayton family’s pool has vertices at the coordinates (0, 2), (0, 5), (2, 5), (2, 6), (5, 6), (5, 1), (2, 1), and (2, 2). if each grid square has an area of 9 square feet, what is the area of the pool?
Answers: 1
Mathematics, 21.06.2019 20:50
The first side of a triangle measures 5 in less than the second side, the third side is 3 in more than the first side, and the perimeter is 17 in. how long is the third side? if s represents the length of the second side, which of the following represents the length of the third side? s-5 ws-2 s+ 3 next question ask for turn it in
Answers: 1
Mathematics, 21.06.2019 22:30
Kevin's bank offered him a 4.5% interest rate for his mortgage. if he purchases 3 points, what will be his new rate?
Answers: 2
HELP!!!
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