Question 6: If a certain machine makes electrical resistors having a mean resistance of 40 ohms and a standard deviation of 2 ohms. a. What is the probability that an electric resistor has a resistance of 30 ohms? b. What is the probability that a random sample of 36 of these resistors will have a combined resistance of more than 1800 ohms? c. What is the probability that a random sample of 10 of these resistors will have a combined resistance of more than 540 ohms assuming a normal distribution for the resistance of electrical resistors?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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Chapter11: Data Analysis And Probability
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Question 6: If a certain machine makes electrical resistors having a mean resistance of 40 ohms and a standard
deviation of 2 ohms.
a.
What is the probability that an electric resistor has a resistance of 30 ohms?
b. What is the probability that a random sample of 36 of these resistors will have a combined resistance of
more than 1800 ohms?
c. What is the probability that a random sample of 10 of these resistors will have a combined resistance of
more than 540 ohms assuming a normal distribution for the resistance of electrical resistors?
Transcribed Image Text:Question 6: If a certain machine makes electrical resistors having a mean resistance of 40 ohms and a standard deviation of 2 ohms. a. What is the probability that an electric resistor has a resistance of 30 ohms? b. What is the probability that a random sample of 36 of these resistors will have a combined resistance of more than 1800 ohms? c. What is the probability that a random sample of 10 of these resistors will have a combined resistance of more than 540 ohms assuming a normal distribution for the resistance of electrical resistors?
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