(Answered) 1 what is the standard deviation of the sampling

Statistics

1. What is the standard deviation of the sampling distribution?

2. What is the expected value?

3. What is the probability that the average life in the sample will be between 2,670.56 and 2,809.76 hours?

4. What is the probability that the average life in the sample will be greater than 3,219.24 hours?

5. What is the probability that the average life in the sample will be less than 3,180.96 hours?

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