Suppose that 10% of all steel shafts produced by a certain process are nonconforming but can be reworked(rather than having to be scrapped). Consider a random sample of 200 shafts, and let X denote the number among these that are nonconfirming and can be reworked. What is the (approximate) probability that X is a. At most 30? b. Less than 30? c. Between 15 and 25 (inclusive)?
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 10% of all steel shafts produced by a certain process are nonconforming but can be reworked(rather than having to be scrapped). Consider a random sample of 200 shafts, and let X denote the number among these that are nonconfirming and can be reworked. What is the (approximate)
a. At most 30?
b. Less than 30?
c. Between 15 and 25 (inclusive)?
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