A research center claims that at least 30% of adults in a certain country think that their taxes will be audited. In a random sample of 900 adults in a recent year, 25% say they are concerned that their taxes will be audited. At a = 0.01, is there enough evidence to reject the center's claim? Com through (e) below. (a) Identify the claim and state Ho and Ha. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) O A. % of adults in the country think that their taxes will be audited. O B. Less than % of adults in the country think that their taxes will be audited. O C. At least 30 % of adults in the country think that their taxes will be audited. O D. The percentage of adults in the country who think that their taxes will be audited is not %. Let p be the population proportion of successes, where a success is an adult in the country who thinks that their taxes will be audited. State H, and the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) O A. Ho p+ O B. Ho: p= C. Ho p2 H:n= H Hnc
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.
Claim:
C. At least 30% of adults in the country think that their taxes will be audited.
The null and alternative hypothesis is,
This corresponds to a left-tailed test.
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