Suppose that you randomly selected 25 adults. If 19% of the population smoke, a) Using the Range Rule of Thumb, what is the minimum number of usual smokers we can expect to get out of 25 adults? Note: Round all answers to two decimal places. b) Using the Range Rule of Thumb, what is the maximum number of usual smokers we can expect to get out of 25 adults? Note: Round all answers to two decimal places. c) Would it be unusual to randomly select 25 smokers and get 23 smokers? Explain! Yes, since 23 is not between the maximum and minimum usual values. No, since 23 is between the maximum and minimum usual values.
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.
Suppose that you randomly selected 25 adults. If 19% of the population smoke,
a) Using the
Note: Round all answers to two decimal places.
b) Using the Range Rule of Thumb, what is the maximum number of usual smokers we can expect to get out of 25 adults?
Note: Round all answers to two decimal places.
c) Would it be unusual to randomly select 25 smokers and get 23 smokers? Explain!
- Yes, since 23 is not between the maximum and minimum usual values.
- No, since 23 is between the maximum and minimum usual values.
d) If we randomly selected 25 adults and found 23 smokers in the group, what could we conclude?
- We can conclude that 19% of smokers is probably incorrect, and that the percentage of smokers is greater than 19%.
- We cannot conclude that the 19% of smokers is probably incorrect
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