In 2011, the institute of medicine (iom), a non-profit group affiliated with the us national academy of sciences, reviewed a study measuring bone quality and levels of vitamin-d in a random sample from bodies of 675 people who died in good health. 8.5% of the 82 bodies with low vitamin-d levels (below 50 nmol/l) had weak bones. comparatively, 1% of the 593 bodies with regular vitamin-d levels had weak bones. is a normal model a good fit for the sampling distribution?

(a) no, the groups are not the same size.
(b) yes, there are close to equal numbers in each group.
(c) no, there are not at least 10 people with weak bones and 10 people with strong bones in each group.
(d) yes, there are at least 10 people with weak bones and 10 people with strong bones in each group

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step-by-step explanation:

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see below

step-by-step explanation:

7.   there are 10 data points in the set.   the middle point is between 5 and 6.   the middle point in the top half is 8   and the middle point in the bottom half is 3. to find the iqr , take point 8 and subtract point 3

mid term   point 8 = 100   point 3 = 88

iqr = 100-88 = 12

final   point 8 = 93   point 3 = 78

iqr = 93 - 78 = 15

the final has the greatest iqr

6.   b - there is a high data value that causes the data set to be asymmetrical for the males: the data for males are high and asymmetrical .   there is an outlier for the males that skews the data

5.   the   iqr is a better measure of spread for the movies and basketball games.   since the basketball game has an outlier, we do not want to use standard deviation for measurement.  

3.   the exam median is much higher than the class median.   the median line is farther to the right on the exams

2.   there is no way to tell what the means are from the box and whisker plots.  

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.