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What is the range?


121.What is the range?

A. 3

B. 4

C. 1.291

D. 1.667

E. 2.779

122.What is the variance?

A. 3

B. 4

C. 1.291

D. 1.667

E. 2.779

123.What is the standard deviation?

A. 3

B. 4

C. 1.291

D. 1.667

E. 2.779

Use the following to answer questions 124-126:

The company financial officer was interested in the average cost of PCs that had been purchased in the

past six months. A random sample of the price of 10 computers was taken with the following results

(mean = $3,213):

$3,250, $1,127, $2,995, $3,250, $3,445, $3,449, $1,482, $6,120, $3,009, $4,000

124.What is the range?

A. 1359

B. 4993

C. 1846575

D. 3587

E. 1976454

125.What is the variance?

A. 1359

B. 4993

C. 1846575

D. 3587

E. 1976454

126.What is the standard deviation?

A. 1359

B. 4993

C. 1846575

D. 3587

E. 1976454

Use the following to answer questions 127-129:

The local amusement park was interested in the average wait time at their most popular roller coaster

at the peak park time (2 p.m.). They selected 13 patrons and had them get in line between 2 and 3 p.m.

Each was given a stop watch to record the time they spent in line. The times recorded were as follows (in

minutes) (mean = 114.15):

118, 124, 108, 116, 99, 120, 148, 118, 119, 121, 45, 130, 118

127.What is the range?

A. 103

B. 23.62

C. 557.97

D. 128.8

E. 115

128.What is the variance?

A. 103

B. 23.62

C. 557.97

D. 128.8

E. 115

129.What is the standard deviation?

A. 103

B. 23.62

C. 557.97

D. 128.8

E. 115

Use the following to answer questions 130-132:

Quality control is an important issue at ACME Company which manufacturers light bulbs. In order

to conduct testing of the life hours of their light bulbs, they randomly sampled nine light bulbs and

measured how many hours they lasted (mean = 346.6).

378, 361, 350, 375, 200, 391, 375, 368, 321

130.What is the range?

A. 342.43

B. 3424.3

C. 58.5

D. 191

E. 10609

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27 Feb 2018
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