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 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 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

The following give the number of hours spent doing homework and attending classes by 10 randomly selected college students during the past one week.86172429-25321921Calculate median, mode, first quartile, third quartile and variance for these data

A study was conducted to estimate μ, the mean number of weekly hours that U.S. adults use computers at home. Suppose a random sample of 81 U.S. adults gives a mean weekly computer usage time of 8.5 hours and that from prior studies, the population standard deviation is assumed to be σ = 3.6 hours.We are 95% confident that the mean number of weekly hours that U.S. adults use computers at home falls between which of the following intervals?Group of answer choices7.7 and 9.37.3 and 9.76.5 and 10.58.4 and 8.68.1 and 8.9

2. A survey conducted on campus found that the time spent on lunch is normally distributed with a mean of 44 minutes and a standard deviation of 7 minutes. Estimate the following: a. What’s the percentage of UCA students who spend between 30 and 44 minutes on lunch? b. What’s the percentage of UCA students who spend more than 51 mins on lunch? c. What’s the percentage of UCA students who spend less than 30 mins on lunch? d. What’s the percentage of UCA students who spend between 10 and 30 minutes on lunch?