Homework Answers
The class width in this table is 9 because we know that the class width is equal to difference of upper limit -lower limit
Class width=upper limit-lower limit
So answer is 9
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Question 2 The sumbers of hours worked (per week:) by 400 statistics students are shown below...
The numbers of hours worked (per week) by 400 statistics students are shown below. Number of...
The numbers of hours worked (per week) by 400 statistics
students are shown below.
Number of hours Frequency 0-9 20 10-19 80 20- 29 200 30-39 100 The cumulative percent frequency for 29 hours is 50 75 200 300
A random sample of 15 college students were asked "How many hours per week typically do...
A random sample of 15 college students were asked "How many hours per week typically do you work outside the home?" Their 13 responses are shown on the right 31 13 Determine the shape of the distribution of hours worked by drawing a frequency histogram and computing the mean and median 18 Which measure of central tendency better describes hours worked? 16 18 25 28 20 24 15 Choose the correct frequency histogram below Hours Worked per Week OA Hours...
Consider the following frequency table representing the distribution of hours students watch tv in a week....
Consider the following frequency table representing the distribution of hours students watch tv in a week. Hours Students Watch TV in a Week Class Frequency 15 9-15 16-22 6 23-29 30-36 7 37-43 8 Copy Data Step 2 of 2: Determine the upper class boundary for the first class.
A sample of 200 college freshmen was asked how many hours per week they spent playing...
A sample of 200 college freshmen was asked how many hours per week they spent playing video games. The following frequency distribution presents the results. Number of Hours Frequency 1.0- 3.9 20 4.0- 6.9 32 7.0- 9.9 47 10.0- 12.9 28 13.0- 15.9 24 16.0- 18.9 18 19.0- 21.9 12 22.0- 24.9 7 25.0- 27.9 4 28.0- 30.9 8 1) What is the class width? 2) What percentage of students play video games for less than 19 hours per week?...
Hours Students Spend on Homework in a Week Class Frequency 8-18 9 19-29 3 30-40 5...
Hours Students Spend on Homework in a Week Class Frequency 8-18 9 19-29 3 30-40 5 41-51 10 52-62 6 Step 2 of 2: Determine the upper class boundary for the first class.
Suppose we want to estimate the difference between the average number of hours worked per week...
Suppose we want to estimate the difference between the average number of hours worked per week by all Americans with a college degree and those without a college degree. Summary information for each group is shown in the tables. 200 College degree 100 20 80 250 No college degree 50 80 Hours worked per week Statistic College Degree No College Degree Mean42.5 hours SD 39.1 hours 14.9 hours 14.7 hours 467 646 1. Create a 95% confidence interval for the...
A professor had students keep track of their social interactions for a week. The number of...
A professor had students keep track of their social interactions for a week. The number of social interactions over the week is shown in the following grouped frequency distribution. What is the class width? Number of Social InteractionsFrequencies5-10611-161817-221023-281329-341635-40941-46547-52653-58059-644
1. The following data set is the average sulfur dioxide (SO,) level in 28 major American...
1. The following data set is the average sulfur dioxide (SO,) level in 28 major American cities. Albuquerque Atlanta Baltimore Charleston Chicago Cincinnati Cleveland 10 Phoenix 10 Pittsburgh 16 Salt Lake City 29 San Francisco 9 Memphis Dallas 24 Denver 47 Detroit 31 Houston 11 10 61 28 12 29 56 69 Washington DC 17 Miami 35 Milwaukee 10 Minneapolis 110 Indianapolis 28 Nashville 14 New Orleans 30 Philadelphia 18 Seattle 23 Kansas City Louisville 9 St. Louis 29 65...
A sample of 200 high school students were asked how many hours per week they spend...
A sample of 200 high school students were asked how many hours per week they spend watching television. The following frequency distribution presents the results. Time Spent Watching Television Number of hours Frequency 0.0-3.9 38 4.0.7.9 38 8.0-11.9 34 12.0-15,9 23 16.0-19.9 24 20.0-23.9 23 24.0-27.9 20
Consider the following frequency table representing the distribution of hours students spend on homework in a...
Consider the following frequency table representing the distribution of hours students spend on homework in a week. Class Frequency 13-21 11 22-30 9 31-39 3 40-48 3 49-57 15 Step 1 of 2: Determine the relative frequency for the fifth class as a simplified fraction. Step 2 of 2: Determine the relative frequency for the third class as a simplified fraction.
The numbers of hours worked (per week) by 400 statistics
students are shown below.
Number of hours Frequency 0-9 20 10-19 80 20- 29 200 30-39 100 The cumulative percent frequency for 29 hours is 50 75 200 300
A random sample of 15 college students were asked "How many hours per week typically do you work outside the home?" Their 13 responses are shown on the right 31 13 Determine the shape of the distribution of hours worked by drawing a frequency histogram and computing the mean and median 18 Which measure of central tendency better describes hours worked? 16 18 25 28 20 24 15 Choose the correct frequency histogram below Hours Worked per Week OA Hours...
Consider the following frequency table representing the distribution of hours students watch tv in a week. Hours Students Watch TV in a Week Class Frequency 15 9-15 16-22 6 23-29 30-36 7 37-43 8 Copy Data Step 2 of 2: Determine the upper class boundary for the first class.
Hours Students Spend on Homework in a Week Class Frequency 8-18 9 19-29 3 30-40 5 41-51 10 52-62 6 Step 2 of 2: Determine the upper class boundary for the first class.
Suppose we want to estimate the difference between the average number of hours worked per week by all Americans with a college degree and those without a college degree. Summary information for each group is shown in the tables. 200 College degree 100 20 80 250 No college degree 50 80 Hours worked per week Statistic College Degree No College Degree Mean42.5 hours SD 39.1 hours 14.9 hours 14.7 hours 467 646 1. Create a 95% confidence interval for the...
1. The following data set is the average sulfur dioxide (SO,) level in 28 major American cities. Albuquerque Atlanta Baltimore Charleston Chicago Cincinnati Cleveland 10 Phoenix 10 Pittsburgh 16 Salt Lake City 29 San Francisco 9 Memphis Dallas 24 Denver 47 Detroit 31 Houston 11 10 61 28 12 29 56 69 Washington DC 17 Miami 35 Milwaukee 10 Minneapolis 110 Indianapolis 28 Nashville 14 New Orleans 30 Philadelphia 18 Seattle 23 Kansas City Louisville 9 St. Louis 29 65...
A sample of 200 high school students were asked how many hours per week they spend watching television. The following frequency distribution presents the results. Time Spent Watching Television Number of hours Frequency 0.0-3.9 38 4.0.7.9 38 8.0-11.9 34 12.0-15,9 23 16.0-19.9 24 20.0-23.9 23 24.0-27.9 20
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