Question

Suppose that a polling company surveyed 600 people about how much time they spend using the Internet each week. The results of this survey were compiled and used to create this relative frequency histogram. 30 20 10 12 16 20 24 28 32 36 Weekly hours of internet use Assume that all percentages shown in the histogram are whole numbers. Each of the bars in this histogram includes only the left endpoint of the class except for the last bar, which also includes the right endpoint. What percentage of respondents said that they use the Internet less than 12 hours per week? 65 How many respondents said that they use the Internet between 16 and 24 hours per week? 78 respondents Which of the following statements about the amount of time the respondents spend using the Internet is true? OThe greatest amount of time an individual respondent spends using the Internet each week is 36 hours. O Fewer than 10% of respondents spend at least 28 hours using the Internet each week. O More than half of the respondents spend at least 12 hours using the Internet per week. A majority of respondents spend between four and eight hours using the Internet per week.

Answer 1

Answer

Option A is incorrect because all the bars in the histogram includes only left values, but not right values. So, 36 hours is not included in the histogram

Correct answer is option C because we have solved in first part that 65% or more than half of the respondents spend at least 12 hours using the internet per week.

Option D is incorrect because around 27% respondents spend between four and eight hours, which is not majority. Majority means more than 50%

Option B is incorrect because almost 70-80% respondents speend at least 28 hours.