The following describes a sample. The information given includes the five number summary, the sample size, and the largest and smallest data values in the tails of the distribution.

Five number summary:(10,37,47,51,66);n=120

Tails:10,15,23,25,26,...,59,60,60,61,66

Clearly identify any outliers using theIQRmethod. Select all that apply.

No Outliers

10

15

23

25

26

59

60

60

61

66

State whether the quantity described is a parameter or a statistic and give the correct notation.

Average number of television sets per household in North Carolina, using data from a sample of800 households.

(a) State whether the quantity described is a parameter or a statistic.

(b) What is the correct Notation?

For1-2, usingx1-x2=3 with a margin of error 6

The interval is blank to blank

Bisphenol A (BPA) is in the lining of most canned goods, and recent studies have shown a positive association between BPA exposure and behavior and health problems. How much does canned soup consumption increase urinary BPA concentration? That was the question addressed in a recent study¹in which consumption of canned soup over five days was associated with a more than1000% increase in urinary BPA. In the study,75participants ate either canned soup or fresh soup for lunch for five days. On the fifth day, urinary BPA levels were measured. After a two-day break, the participants switched groups and repeated the process. The difference in BPA levels between the two treatments was measured for each participant. The study reports that a95%confidence interval for the difference in means (canned minus fresh) is19.6

to25.5 g/L.

(a) Is this a randomized comparative experiment or a matched pairs experiment?

(b) If the study had included500participants instead of75 , would you expect the confidence interval to bewiderornarrower?

Wider

Narrower