Mathematics, 17.03.2020 04:17 isaacgarcia0830
In a study of the effects of acid rain, a random sample of 100 trees from a particular forest is examined. Forty percent of these show some signs of damage. Which of the following statements is correct?
a. None of the above
b. The sampling distribution of the proportion of damaged trees is approximately Normal
c. This is a comparative experiment.
d. If a sample of 1000 trees was examined, the variability of the sample proportion would be larger than in a sample of 100 trees
e. If we took another random sample of trees, we would find that 40% of these would show some signs of damage
Answers: 3
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Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.
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In a study of the effects of acid rain, a random sample of 100 trees from a particular forest is exa...
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