Author Question: A bored carpenter counts the actual number of nails in 10 boxes of nails and records his findings ... (Read 355 times)

sabina · **on:** Jun 24, 2018

A bored carpenter counts the actual number of nails in 10 boxes of nails and records his findings as: 230, 235, 302, 287, 312, 323, 265, 319, 342, and 298. What can we say about the shape of the distribution of the number of nails?

A) symmetric
B) skewed to the right
C) approximately bell-shaped
D) skewed to the left

Question 2

Which of the following statements involve inferential statistics as opposed to descriptive statistics?

A) The FAA reported there were 180 near misses among commercial aircraft last year.
B) A class of fifty five statistics students earned an average grade of 72.5.
C) The city business office reported 50 building permits for new single-family housing units.
D) Based on a sample of 450 subscribers, a local satellite TV system estimates that 45 percent of its subscribers watch a premium channel at least once per day.