s the newly hired manager of a company that provides cell phone service, you want to determine the percentage of adults in your state who live in a household with cellphones and no land-line phones. How many adults must you survey? Assume that you want to be 90% confident that the sample percentage is within four percentage points of the true population percentage.Assume that nothing is known about the percentage of adults who live in a household with cell phones and no land-line phones. Solve the previous question if assuming that a recent survey suggests that about 92% of adults live in a household with cell phones and no land-line phones (based on data from a survey).
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.
As the newly hired manager of a company that provides cell phone service, you want to determine the percentage of adults in your state who live in a household with cellphones and no land-line phones. How many adults must you survey? Assume that you want to be 90% confident that the sample percentage is within four percentage points of the true population percentage.Assume that nothing is known about the percentage of adults who live in a household with cell phones and no land-line phones.
Solve the previous question if assuming that a recent survey suggests that about 92% of adults live in a household with cell phones and no land-line phones (based on data from a survey).
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