9 Weights of pennies: The distribution of weights of United States pennies is approximately normal with a mean of 2.5 grams and a standard deviation of 0.03 grams. b) Describe the sampling distribution of the mean weight of 20 randomly chosen pennies. For the mean, round your answer to 1 decimal place and for the standard deviation round your answer to 4 decimal place. c) What is the probability that the mean weight of 20 pennies is less than 2.4 grams? Round your answer to 2 decimal places.
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
4.39 Weights of pennies: The distribution of weights of United States pennies is approximately normal with a
b) Describe the sampling distribution of the mean weight of 20 randomly chosen pennies. For the mean, round your answer to 1 decimal place and for the standard deviation round your answer to 4 decimal place.
c) What is the probability that the mean weight of 20 pennies is less than 2.4 grams? Round your answer to 2 decimal places.
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