2 Points
Here is a histogram displaying the top 30 lifetime batting
averages in baseball history.
320 - 329
330-339
340-349
350 - 359
360 - 369
This distribution of data shows lots of lifetime averages in
the middle classes, but tails off sharply at both the upper
and lower ends. What best explains the fact that there are
very few averages in the lowest class?

At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. the cyclic nature of wind and moving sand determines the shape and location of large dunes. at a test site, the prevailing direction of the wind did not change noticeably. however, the velocity did change. fifty-nine wind speed readings gave an average velocity of x = 1075 cm/sec. based on long-term experience, σ can be assumed to be 245 cm/sec. (a) find a 95% confidence interval for the population mean wind speed at this site. (round your answers to the nearest whole number.) lower limit cm/sec upper limit cm/sec