(a) The mean is closest to: (b) The median is closest to: (a) The mean is closes
ID: 3060281 • Letter: #
Question
(a) The mean is closest to:
(b) The median is closest to:
(a) The mean is closest to:
(b) The median is closest to:
(c) Is this data skewed to the right, symmetric, or skewed to the left?
(Enter "SKEWED RIGHT", "SYMMETRIC" or "SKEWED LEFT" without the quotations.)
2. For each problem, select the best response.
(a) The scores of adults on an IQ test is approximately Normal with mean 100 and standard deviation 15. Corinne scores 118 on such test. Her z-score is about
A. 18
B. 7.87
C. 1.2
D. 0.67
E. None of the above.
(b) The length of human pregnancies from conception to birth varies according to a distribution that is approximately Normal with mean 266 days and standard deviation 16 days. According to the empirical rule, approximately 95% of all pregnancies last between
A. 218 and 314 days.
B. 234 and 298 days.
C. 260 and 320 days.
D. 250 and 282 days.
E. None of the above.
(c) To completely specify the shape of a Normal distribution, you must give
A. the mean and the standard deviation.
B. the five-number summary.
C. the mean and the median.
D. the variance and the standard deviation.
E. All of the above.
Explanation / Answer
1
Graph 1:
(a) The mean is closest to: A
(b) The median is closest to: B
(c) SKEWED LEFT
Graph 2:
(a) The mean is closest to: B
(b) The median is closest to: B
(c) SYMMETRIC
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.