Question: A recent magazine article stated that 25 of the businesses
A recent magazine article stated that 25% of the businesses that were audited by the Internal Revenue Service (IRS) last year had never been audited before, 40% had been audited one previous time, and 35% had been audited at least twice before. In a simple random sample of 100 businesses being audited this year, 21 had never been audited before, 52 had been audited one previous time, and 27 had been audited at least twice before. Conduct a proper hypothesis test to determine whether this sample result is enough to reject a null hypothesis that the audit proportions are the same as last year. Use a significance level of .05.
Relevant QuestionsOnline Now reports that 30% of online customers who fail to complete an online purchase fail because they are concerned about the security of their purchase information; 20% fail because they are confused by the purchase ...Sorta Ice Cream sells a new soy based ice cream substitute. The company is convinced that 40% of people will prefer vanilla, 25% will prefer chocolate, 15% will prefer strawberry, and the rest will prefer some other flavor. ...Refer to Exercise 36. For the sample data reported there, compute the proportion of students in each class who answered’ yes’ to the survey question. Following the approach described in Section 14.1 for testing ...Randall, Inc. is studying the rate of late payments by its commercial and retail customers. In a sample of 100 commercial customers taken last month, 17% were late with their payment. In a sample of 150 retail customers, 12% ...For the past 10 years, employment patterns for recent business school graduates have been fairly constant. For example, within the first year after graduation, 23% of students found a job in their major area of study, 38% ...
Post your question