A rare form of malignant tumor occurs in 11 children in a million, so its probability is 0.000011. Four cases of this tumor occurred in a certain town, which had 19,950 children. Assuming that this tumor occursas usual, find the mean number of cases in groups of 19950 children. Using the unrounded mean frompart (a ), find the probability that the number of tumor cases in a group of 19950 children is 0 or 1. What is the probability of more thanone case? Does the cluster of four cases appear to be attributable torandom chance? Why or why not? The mean number of cases is0.197. (Type an integer or decimal rounded to three decimal places as needed.) The probability that the number of cases is exactly 0 or 1is ? (Round to three decimal places as needed.) The probability of more than one case is ? (Round to three decimal places as needed.) Let a probability of 0.05 or lessbe "very small," and let a probability of 0.95 or more be "very large". Does the cluster of four cases appear to be attributable to random chance? Why or why not? No,because the probability of more than one case is very small. B.Yes, because the probability of more than one case is very small. Yes,because the probability of more than one case is very large. No,because the probability of more than one case is very large.
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.
A rare form of malignant tumor occurs in 11 children in a million, so its
- Assuming that this tumor occursas usual, find the mean number of cases in groups of 19950 children.
- Using the unrounded mean frompart (a ), find the probability that the number of tumor cases in a group of
19950 children is 0 or 1.
- What is the probability of more thanone case?
- Does the cluster of four cases appear to be attributable torandom chance? Why or why not?
- The mean number of cases is0.197.
(Type an integer or decimal rounded to three decimal places as needed.)
- The probability that the number of cases is exactly 0 or 1is ?
(Round to three decimal places as needed.)
- The probability of more than one case is
? (Round to three decimal places as needed.)
- Let a probability of 0.05 or lessbe "very small," and let a probability of 0.95 or more be "very large". Does the cluster of four cases appear to be attributable to random chance? Why or why not?
- No,because the probability of more than one case is very small.
B.Yes, because the probability of more than one case is very small.
- Yes,because the probability of more than one case is very large.
- No,because the probability of more than one case is very large.
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