Power companies severely trim trees growing near their lines to avoid power failures due to falling limbs in storms. Applying a chemical to slow the growth of the trees is cheaper than trimming, but the chemical kills some of the trees. Suppose that one such chemical would kill 20% of sycamore trees. The power company tests the chemical on 250 sycamores. Consider these an SRS from the population of all sycamore trees. What is the probability that 24% or more of the trees in the sample are killed? Step #2: Calculate the mean and standard deviation of the sampling distribution. Use appropriate notation. Mean of the Sampling Distribution: Symbol = Formula = Answer: Standard Deviation of the Sampling Distribution: Symbol = Formula = Answer:
Power companies severely trim trees growing near their lines to avoid power failures due to falling limbs in storms. Applying a chemical to slow the growth of the trees is cheaper than trimming, but the chemical kills some of the trees. Suppose that one such chemical would kill 20% of sycamore trees. The power company tests the chemical on 250 sycamores. Consider these an SRS from the population of all sycamore trees. What is the probability that 24% or more of the trees in the sample are killed? Step #2: Calculate the mean and standard deviation of the sampling distribution. Use appropriate notation. Mean of the Sampling Distribution: Symbol = Formula = Answer: Standard Deviation of the Sampling Distribution: Symbol = Formula = Answer:
Chapter8: Sequences, Series,and Probability
Section: Chapter Questions
Problem 18T: You attend a karaoke night and hope to hear your favorite song. The karaoke song book has 300...
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first part is the question, and the second part is the choices
Transcribed Image Text:p(1-p)
Of = V
´P (1-p)
:: X
:: p
do
= 0.025 : U6 = 0.20 * U6 = 0.24
:: p
:: p
= p
Mp
::
::
::
::
n
n
0.24(0.76)
0.20(0.80)
0.027
::
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250
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Transcribed Image Text:Power companies severely trim trees growing near their lines to avoid power failures due to falling limbs in storms. Applying a chemical to slow the growth
of the trees is cheaper than trimming, but the chemical kills some of the trees. Suppose that one such chemical would kill 20% of sycamore trees. The
power company tests the chemical on 250 sycamores. Consider these an SRS from the population of all sycamore trees. What is the probability that 24% or
more of the trees in the sample are killed?
Step #2: Calculate the mean and standard deviation of the sampling distribution. Use appropriate notation.
Mean of the Sampling Distribution: Symbol = ;
Formula =
Answer:
Standard Deviation of the Sampling Distribution: Symbol =
Formula =
Answer:
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