A college professor collected data on the number of hours spent by his 100 students over the weekend to prepare for Monday’s Business Statistics exam. He processed the data by Excel and the following incomplete output is available. Mean 7Sample Variance 7.84Skewness 1.17 The coefficient of variation in the data is __________.Multiple Choice40%243%111%90%

A college professor collected data on the number of hours spent by his 100 students over the weekend to prepare for Monday’s Business Statistics exam. He processed the data by Excel and the following incomplete output is available. Mean 18Sample Variance 6.89Skewness 1.07 The median is most likely to be __________.Multiple ChoiceCannot tell from the information providedgreater than 18 hoursless than 18 hoursabout 18 hours

A sample of 25 undergraduates reported the following dollar amounts of entertainment expenses last year:                          717 681 735 725 719 721 737 698 718 759 681 699 696716 719 722 733 720 690 691 768 709 736 761 687  Click here for the Excel Data FileRequired:a. Find the mean, median, and mode of this information. (Round the "Mean" to 2 decimal places.)b. What are the range and standard deviation? (Round the "Standard deviation" to 2 decimal places.)c. Use the Empirical Rule to establish an interval that includes about 95% of the observations. (Round your answers to 2 decimal places.) PrevQuestion 10 of 15 Total10 of 15Visit question mapNext

An instructor recommends to students in his introductory statistics class to spend at least 5 hours studying outside class. One of the items on the student survey for this course was "How many hours a week do you study for this class?” The instructor examined the data for men and women separately. Below is the distribution of this variable for the 30 women in the class.Part A: How should the instructor interpret the amount of time that women spend studying for the class? There can be more than one correct answer. Please answer all that apply.  Group of answer choicesA majority of women in the class spend less than the recommended number of hours studying although a few women do take the instructors advice.The women in the class study less than the men in the class.If you remove the three women with the highest number of study hours, then the result will show an approximately normal distribution.

A researcher records the number of hours spent studying each week by a group of students. What type of variable is this?Group of answer choicesDiscreteOrdinalCategoricalContinuous

A researcher has collected the following sample data.   351232The coefficient of variation isGroup of answer choices72.66%264%81.24%27.66%