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Sampling and Estimation Question and answers 100% correct 2024/2025 $13.49   Add to cart
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Sampling and Estimation Question and answers 100% correct 2024/2025
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Sampling and Estimation Question and answers 100% correct 2024/2025 Sampling and Estimation Choose true or false. Given a population that meets the conditions of a normal distribution, samples taken at random will also be normally distributed regardless of sample size. True False - correct ...

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  • October 15, 2024
  • 4
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • MATH 172
  • MATH 172

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Sampling and Estimation
Choose true or false.
Given a population that meets the conditions of a normal distribution, samples
taken at random will also be normally distributed regardless of sample size.
True
False - correct answer ✔True


Choose true or false.
Given an infinite population that does not meet the conditions of a normal
distribution, samples taken at random will also not be normally distributed
regardless of sample size.
True
False - correct answer ✔False


Weights of the vegetables in a field are normally distributed. From a sample
Carl Cornfield determines the mean weight of a box of vegetables to be 180
oz. with a standard deviation of 8 oz. He wonders what percent of the
vegetable boxes he has grouped for sale will have a weight more than 196 oz.
Since 0.50 represents the part of the curve to the right of the mean (a z-score
of 0) and the z-score Carl calculates represents the part of the curve from the
mean to the point representing 196 oz., then Carl can find the part of the
curve to the right of 196 oz. by subtracting.


The z-score corresponding to the weight 196 oz. is . Using the table
(column .00), Carl sees the area associated with this z-score is Carl rounds
this value to the nearest thousandth or .
So, Carl subtracts 0.50 - = %. The percent of vegetable boxes that weigh
more than 196 oz is % - correct answer ✔2
0.4772

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