Author Question: The smiling times (in seconds) of an 8-week-old baby can be modeled with a uniform distribution ... (Read 109 times)

Ethanolson3 · **on:** Feb 26, 2023

Question 1

The return on investment for a particular security has historically followed a normal distribution with a mean profit of 4.75% and standard deviation of 1.5%. If the historical pattern holds, what is the probability of investing in this security and seeing greater than a 6% return?

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0.7967

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0.8333

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0.2033

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0.1666

Question 2

The smiling times (in seconds) of an 8-week-old baby can be modeled with a uniform distribution witha= 0 andb = 23 seconds. What is the probability that a randomly chosen 8-week-old baby smiles between 2 and 18 seconds?

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0.7826

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0.6956

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0.8696

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0.0870

hiyayyay · **Reply #1 on:** Feb 26, 2023

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