Questions from Statistics

Q: The table show the gold medal Olympic times (in seconds)

The table show the gold medal Olympic times (in seconds) for the 200-meter run. Data are shown for the first five Olympics of the 1900s and five more recent Olympics in the 2000s. (Source: World Alman...

Q: The table shows the 100-meter backstroke and the 100-

The table shows the 100-meter backstroke and the 100-meter butterfly gold medal Olympic times (in seconds) for five recent Olympics. a. Find and interpret (report in context) the mean and standard de...

Q: StatCrunch did a survey asking respondents their gender and how much they

StatCrunch did a survey asking respondents their gender and how much they thought should be spent on a wedding. The following table shows Minitab descriptive statistics for wedding costs, split by gen...

Q: StatCrunch did a survey asking respondents how much they thought should be

StatCrunch did a survey asking respondents how much they thought should be spent on a wedding and whether or not they had already had a wedding. The following table shows Minitab descriptive statistic...

Q: College students and surfers Rex Robinson and Sandy Hudson collected data on

College students and surfers Rex Robinson and Sandy Hudson collected data on the self-reported numbers of days surfed in a month for 30 longboard surfers and 30 shortboard surfers. Longboard: 4, 9, 8,...

Q: The tuition costs (in dollars) for a sample of four

The tuition costs (in dollars) for a sample of four-year state colleges in California and Texas are shown below. Compare the means and the standard deviations of the data and compare the state tuition...

Q: The histograms below were created from data on the daily high temperature

The histograms below were created from data on the daily high temperature in San Jose and Denver during a winter month. Compare the two distributions. Which city do you think has the higher typical te...

Q: The histograms below were created from data on the daily high temperature

The histograms below were created from data on the daily high temperature in Los Angeles and New York City during a summer month. Compare the two distributions. Which city do you think has the higher...

Q: The mean weight gain for women during a full-term pregnancy

The mean weight gain for women during a full-term pregnancy is 30.2 pounds. The standard deviation of weight gain for this group is 9.9 pounds, and the shape of the distribution of weight gains is sym...

Q: The mean birth length for U.S. children born at

The mean birth length for U.S. children born at full term (after 40 weeks) is 52.2 centimeters (about 20.6 inches). Suppose the standard deviation is 2.5 centimeters and the distributions are unimodal...