Mathematics, 18.05.2021 20:00 lj2754
A researcher posts a newspaper advertisement offering $20 in exchange for participation in a short study. The researcher accepts the first five people who respond to the advertisement. Which of the following statements is true about the sample? (5 points) Question 9 options: 1) It is not a valid sample because it is only a short study. 2) It is a valid sample because money was offered to participants. 3) It is a valid sample because the first five people were selected to participate. 4) It is not a valid sample because it is not a random sample of the population.
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Mathematics, 21.06.2019 14:30
Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?
Answers: 1
Mathematics, 21.06.2019 19:00
How can you tell when x and y are not directly proportional?
Answers: 1
Mathematics, 21.06.2019 19:00
Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?
Answers: 1
A researcher posts a newspaper advertisement offering $20 in exchange for participation in a short s...
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