Some people claim children who practice yoga are more physically fit, self-confident, and self-aware. A random sample of pre-teens (ages 10–12) practicing yoga was obtained and their meditation (or...

Some people claim children who practice yoga are more physically fit, self-confident, and self-aware. A random sample of pre-teens (ages 10–12) practicing yoga was obtained and their meditation (or quiet breathing) times (in minutes) per day were recorded. Use the four methods presented in this section to determine whether there is any evidence to suggest the data are from a non-normal population.

Many NBA players express themselves on the court through their sneakers. High-school basketball players often insist on wearing the same expensive sneakers worn by their favorite player. A random sample of sneakers worn by Notre Dame Prep (in Massachusetts) basketball players was obtained, and the retail price (in dollars) for each pair of sneakers is given in the table below:

Use the four methods presented in this section to determine whether there is any evidence to suggest the data are from a non-normal population.

Bicycle paths are usually planned and constructed according to certain guidelines (for example, the American Association of State Highway and Transportation Officials guidelines for construction). There are construction standards for width, offset from the road, maximum grade, and horizontal and vertical clearances. A random sample of bicycle-path widths (in feet) was obtained.