Similarly to #2, we want to look at home many college stadiums were built in the past 20 years. We know that 15% of stadiums have just been built in the past 20 years (all the rest are older). Assume we take a sample of 20 stadiums. How many stadiums out of the sample of 20 would you expect to be built in the past 20 years? а. b. What is the standard deviation? What is the probability that exactly 2 stadiums were built in the past 20 years? d. What is the probability that more than 2 stadiums were built in the past 20 years? с.

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Similarly to #2, we want to look at home many college stadiums were built in the past 20 years.
We know that 15% of stadiums have just been built in the past 20 years (all the rest are older).
Assume we take a sample of 20 stadiums.
How many stadiums out of the sample of 20 would you expect to be built in the past 20
years?
а.
b. What is the standard deviation?
What is the probability that exactly 2 stadiums were built in the past 20 years?
d. What is the probability that more than 2 stadiums were built in the past 20 years?
с.
Transcribed Image Text:Similarly to #2, we want to look at home many college stadiums were built in the past 20 years. We know that 15% of stadiums have just been built in the past 20 years (all the rest are older). Assume we take a sample of 20 stadiums. How many stadiums out of the sample of 20 would you expect to be built in the past 20 years? а. b. What is the standard deviation? What is the probability that exactly 2 stadiums were built in the past 20 years? d. What is the probability that more than 2 stadiums were built in the past 20 years? с.
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