Measurement Scales

Textbook Price Number of Textbooks
$25 to $34.99 2
$35 to $44.99 16
$45 to $54.99 5
$55 to $64.99 7
$65 to $74.99 20
 

Estimate the mean price of a textbook.
 

A. $554.00

B. $11.08

C. $60.00

D. $55.40
 

A. $554.00
B. $11.08
C. $60.00
D. $55.40
 

Question

A supermarket has determined that daily demand for eggs has a bell-shaped distribution, with a mean of 55 cartons and a standard deviation of six cartons. If the supermarket begins each morning with a stock of 61 cartons of eggs, approximately what percentage of days will there be a surplus of eggs?
 A. 16%

B. 18%

C. 68%

D. 84%

 

 

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