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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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LRotundo LRotundo
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6 years ago
Students of a large university spend an average of 5 a day on lunch. The standard deviation of the expenditure is 3 . A simple random sample of 36 students is taken.
 a. What are the expected value, standard deviation, and shape of the sampling distribution of the sample mean?
  b. What is the probability that the sample mean will be at least 4?
  c. What is the probability that the sample mean will be at least 5.90?
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MacdonaldcMacdonaldc
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6 years ago
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LRotundo Author
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6 years ago
this is exactly what I needed
novae
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Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
ezsancheezy
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2 hours ago
This helped my grade so much Perfect
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