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Sampling Distributions

Sampling Distributions. Yogurt.

gareth
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Sampling Distributions

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  1. Sampling Distributions

  2. Yogurt • Dannon is supposed to put 29.6 grams of fruit in their fruit-flavored yogurt. The company claims the standard deviation for the yogurt process is 2.8grams. We took a sample of 31 containers to check for quality. What’s the probability that we found the average of those containers to be less than 28.9grams?

  3. Boys and Girls • Assuming that boys and girls are equally likely, estimate the probability of getting more than 36 girls in 64 births.

  4. Women’s Height • We know that women’s heights are normally distributed with a mean of 63.6 inches and a standard deviation given by σ = 2.5in. If 36 women are randomly selected, find the probability that they have a mean height less than 64in.

  5. Voter’s Lying??? • In a survey of 1002 people, 701 said that they voted in a recent presidential election (based on data from ICR Research Group). Voting records show that 61% of eligible voters actually did vote. Given that 61% of eligible voters actually did vote, find the probability that among 1002 randomly selected eligible voters, at least 701 actually did vote.

  6. I’ll add the solutions later this evening!!!!

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