STA 3024
Assignment 1: Form 0
This form is only for people whose UFID number starts with 0.
1. A study is conducted to examine the eﬀectiveness of a certain type of nicotine type of
nicotine patch that helps people stop smoking. Eight people trying to stop smoking are
divided into two groups of four. One group is asked to use the patch, while the other
group is asked to use some alternative treatment. Is this an observational study or an
experiment?
2. Five shoppers at a department store are randomly selected. These ﬁve shoppers spent
an average of $49 in the store. From this, the store manager estimates that the average
amount of money spent by any shopper in the store is $49. Identify the population,
sample, parameter, and statistic that are relevant to this situation.
3. Suppose that, based on a random sample of 148 UF graduates with a certain major, a
95% conﬁdence interval for the average starting salary (in thousands of dollars) for people
with this major is (69
.
8
,
74
.
8)
.
True or false:
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 Spring '08
 TA
 Statistics

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