Bundle of Business statistics Exams| Questions with Complete Solutions

When comparing the mean annual dividend rate for companies in the utilities and insurance industries, which of the following 95% confidence intervals can be constructed? - 5.78 ± 2.160 * 1.11 At the 2% level of significance, what is the decision? - Fail to reject the null hypothesis and conclud...

False - In one-way ANOVA, the numerator degrees of freedom equals the number of samples being compared. discrete - The variable Employment Status, which can take either the value 1 for Employed and 0 for Unemployed, is an example of a ________ random variable. the sample size is large - There is...

A researcher is interested in the travel time of Utrecht University students to college. A group of 50 students is interviewed. Their mean travel time in 16.7 minutes. For this study the mean of 16.7 minutes is an example of a(n) - Statistic A researcher is curious about the IQ of students at the...

XYZ Corporation made a profit of $3 million last year. ABC Corporation made a profit of $6 million last year. Based on the ratio scale, which of the following is an accurate statement about the relationship between ABC's profits and XYZ's profits? - XYZ was half as profitable as ABC. If the bra...

Five W's - Who, What, When, Where, Why Why five W's? - W's help nail down the context of the data. We must know who, what and why to be able to say anything useful based on the data. Who are the cases, what are the variables, why helps us to decide which way to treat the variables. A variable ...

Business decisions may be made by interpreting a statistical analysis of the variables of the process associated with the decision or by using instinct and insight derived from experience with the business process. When might a decision be made by these latter more "unstructured" techniques? A...