Sampling Distributions and Probabilities Quiz

For a study of 25 homes, find the probability their average water consumption exceeds 420 liters.

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CCSS.HSS.ID.A.4

For a group of 50 people, find the probability that their average height is between 148 cm and 152 cm using normalcdf.

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CCSS.HSS.ID.A.4

In a sample of 80 individuals, 75% are vaccinated. Calculate the probability that this sample proportion is less than 80%.

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CCSS.HSS.IC.B.4

A gym surveys 45 members; determine the probability their average attendance is less than 3 times a week.

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CCSS.HSS.ID.A.4

A sample of 25 finds that 44% support a new recycling law. Use normalcdf to determine the probability of the sample proportion being less than 50%.

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CCSS.HSS.ID.A.4

For a group of 20 dogs, identify the probability of their average weekly consumption being more than 5.2 kg using normalcdf.

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CCSS.HSS.ID.A.4

A random sample of 60 people finds that 35% support a new public policy initiative. Calculate the probability that the sample proportion is greater than 0.35 using normalcdf.

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CCSS.HSS.ID.A.4

For 30 individuals, find the probability that they average more than 3.5 cups of coffee per day.

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CCSS.HSS.ID.A.4

A library poll of 75 adults shows 40% read daily. What is the probability the sample proportion exceeds 30%, using normalcdf?

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CCSS.HSS.ID.A.4

In a survey of 120 voters, what is the likelihood that more than 50% favor the incumbent candidate using normalcdf?

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CCSS.HSS.ID.A.4