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exis [7]
3 years ago
11

The average lifetime of a light bulb is 3,000 hours with a standard deviation of 696 hours. a simple random sample of 36 bulbs i

s taken.
a. what are the expected value, standard deviation, and shape of the sampling distribution of ?
b. what is the probability that the average life in the sample will be between 2,670.56 and 2,809.76 hours?
c. what is the probability that the average life in the sample will be greater than 3,219.24 hours?
d. what is the probability that the average life in the sample will be less than 3,180.96 hours?
Mathematics
1 answer:
ZanzabumX [31]3 years ago
6 0
The answer is A. Hope this helps :)
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