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Histogram Help Please!

StatsGirlInCali

New member
Joined
Nov 9, 2015
Messages
2
Reyesburg Corporation is contemplating using a new, more expensive glue in the construction of its laminated veneer lumber. Of importance to the company is the carrying load of the lumber. The company has tested
beams using the new glue, recording for each beam the pressure (in pounds per square foot) at which the beam broke. The data collected are presented in the following histogram:
Based on the histogram, find the proportion of carrying loads in the sample that are less than
pounds per square foot. Write your answer as a decimal, and do not round your answer.


Carrying Load (in pounds per sq. ft) Frequency
860-880 3
880-900 6
900-920 9
920-940 4
940-960 3

 

Subhotosh Khan

Super Moderator
Staff member
Joined
Jun 18, 2007
Messages
18,089
Reyesburg Corporation is contemplating using a new, more expensive glue in the construction of its laminated veneer lumber. Of importance to the company is the carrying load of the lumber. The company has tested
beams using the new glue, recording for each beam the pressure (in pounds per square foot) at which the beam broke. The data collected are presented in the following histogram:
Based on the histogram, find the proportion of carrying loads in the sample that are less than
pounds per square foot. Write your answer as a decimal, and do not round your answer.


Carrying Load (in pounds per sq. ft) Frequency
860-880 3
880-900 6
900-920 9
920-940 4
940-960 3

How many beams had carrying loads < 900 lbs = 3+6

What are your thoughts?

Please share your work with us ...even if you know it is wrong

If you are stuck at the beginning tell us and we'll start with the definitions.

You need to read the rules of this forum. Please read the post titled "
Read before Posting" at the following URL:

http://www.freemathhelp.com/forum/th...Before-Posting
 

StatsGirlInCali

New member
Joined
Nov 9, 2015
Messages
2
How many beams had carrying loads < 900 lbs = 3+6

What are your thoughts?

Please share your work with us ...even if you know it is wrong

If you are stuck at the beginning tell us and we'll start with the definitions.

You need to read the rules of this forum. Please read the post titled "
Read before Posting" at the following URL:

http://www.freemathhelp.com/forum/th...Before-Posting

I say 0.36 3+6 divided by 25 ????
 

ksdhart

Full Member
Joined
Aug 1, 2014
Messages
384
Yes, your answer seems correct to me. Since you seem uncertain of why that answer is correct, imagine the problem had instead asked you to find the percentage of the beams which broke at 900 lbs/sq ft or less. What would you have done to solve the problem then? Do you see how this applies to the proportion problem?
 
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