An article reported the following data on oxygen consumption (mL/kg/min) for a sample of ten firefighters performing a fire-suppression simulation: 28.2 49.2 30.9 28.8 28.0 25.9 34.0 29.0 23.8 30.1

Compute the following. (Round your answers to four decimal places.)

a. The sample range.
b. The sample variance s2 from the definition
c. The sample standard deviation
d. s2 using the shortcut method.

a)Range= 25.9

b)Variance =49.344

c)Standard deviation=7.0245

Step-by-step explanation:

Data : 28.2 49.2 30.9 28.8 28.0 25.9 34.0 29.0 23.8 30.1

Maximum Value : 49.4

Minimum Value : 23.5  

Range= Maximum - Minimum

Range= 49.4 -23.5 = 25.9

(b)

(c) Sample standard deviation:

d)s2 using the shortcut method.

            X          

          28.6817.96

          49.42440.36

          30.3918.09

          28.2795.24

         28.9835.21

         26.4696.96

        33.81142.44

         29.9894.01

         23.5552.25

          30.2912.04

Total   309.210004.56

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.

hello :

70y^8 + 30y^6 = 2 ( 35 y^8 + 15y^6)

the lenght is : 35 y^8

the width is : 15y^6