Questions from Statistics

Q: Refer to the accompanying bar chart, which shows the time spent

Refer to the accompanying bar chart, which shows the time spent on a typical day talking on the cell phone for some men and women. Each person was asked to choose the one of four intervals that best f...

Q: The accompanying graph shows the distribution of data on whether houses in

The accompanying graph shows the distribution of data on whether houses in a large neighborhood have a garage. (A 1 indicates the house has a garage, and a 0 indicates it does not have a garage.) Is t...

Q: A student has gathered data on self-perceived body image,

A student has gathered data on self-perceived body image, where 1 represents “underweight,” 2 represents “about right,” and 3 re...

Q: The following histogram of marathon times includes data for men and women

The following histogram of marathon times includes data for men and women and also for both an Olympic marathon and an amateur marathon. Greater values indicate slower runners. (Sources: www.forestcit...

Q: A StatCrunch survey asked people how many hours of video they watched

A StatCrunch survey asked people how many hours of video they watched daily. The data can be found at this text’s website. Who watches more hours of video, males or females? Support your answer with a...

Q: A StatCrunch survey asked at what age should a person consider retirement

A StatCrunch survey asked at what age should a person consider retirement. The data can be found at this text’s website. Who thinks people should retire at a younger age, males or females? Support you...

Q: Are the following variables, from Table 1A, numerical or categorical

Are the following variables, from Table 1A, numerical or categorical? Explain. a. Ring size b. Hair color c. Height

Q: The New York Times collected data on the number of calories in

The New York Times collected data on the number of calories in meals at Chipotle restaurant. The distribution of calories was symmetric and unimodal and a graph of the distribution is shown below. a....

Q: The histogram shows hours of sleep on a school night for a

The histogram shows hours of sleep on a school night for a sample of 12th-grade students. a. Use the histogram and left-hand side of each bin to estimate the mean hours (to the nearest tenth) of sleep...

Q: The means are the same, but the standard deviation of one

The means are the same, but the standard deviation of one of the sets is smaller than that of the other. Report the mean and both standard deviations.