Monthly coffeecoffee cost ($) Number of students 10.00-19.99 10 20.00-29.99 18 30.00-39.99 27 40.00-49.99 12 50.00-59.99...

Question

Question

A sample of college students was asked how much they spent monthly on

coffee.

Approximate the standard deviation for the cost.

The sample standard deviation for the cost is.....

(Round to the nearest cent as needed.)

Answer 1

Answer #1

Observation Table:

Mean = = 2469.63 / 74 = 33.37

= 92025.3 / 74 - (33.37)²

= 130.03

Standard deviation = = 11.40

Answer 2

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Monthly coffeecoffee cost​ ($) Number of students ​10.00-19.99 10 ​20.00-29.99 18 ​30.00-39.99 27 ​40.00-49.99 12 ​50.00-59.99...