Consider the following counting problem. Allison is trying to decide which
three of her eight new books to take on vacation with her. How many
different ways can she choose the three books? To solve this problem which
of the following rules would you use?
Both the permutations rule and the basic counting rule
The combinations rule only
The basic counting rule only
The permutations rule only
Suppose that S and T are mutually exclusive events. Which of the
following statements is true?
S and T may or may not be independent
S and T must also be independent
S and T cannot possibly be independent.
Consider the following counting problem. Eight women and seven men are
waiting in line at a movie theater. How many ways are there to arrange
these 15 people amongst themselves such that the eight women occupy the
first eight places and the seven men the last seven places?
To solve this problem, which of the following rules would you use?
The permutations rule only
The basic counting rule only
Both the combinations rule and the basic counting rule
Both the permutations rule and the basic counting rule
In stating a confidence-interval estimate of a population mean, the level of
confidence decreases as the size of the interval ________.
decreases
increases
A hypothesis test for a population mean is to be performed. The hypotheses
are H0 : u = 100 , Ha : u > 100
Which of the sketches below could represent the power curve for the test?
When estimating a population mean by a sample mean, which of the
following does the margin of error not depend on?
The sample mean
The confidence level
The population standard deviation
The sample size
Determine which plot shows the strongest linear correlation.
The following is a set of data from a sample of n = 6, answer the following
statistics: 12 7 4 9 7 3
(a) mean: __________,
(b) median: __________,
(c) mode: __________,
(d) the range: __________,
(e) interquartile range: __________,
(f) variance: __________,
(g) standard deviation: __________
(h) coefficient of variation: __________
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