Answer:
1) Sam only interviewed five people out of his entire ELA class, so he doesn't have a very wide demographic to study
2) All of these people were Sam's friends, so they might all have similar interests or only enjoy certain things, and that doesn't allow for a wide range of data collection
The manufacturer should advertise 13811 pages for each cartridge if it wants to be correct 99% of the time
z-score is the number of standard deviations from the mean value of the reference population
99%=0.99
The z-value associate with 0.99 is 2.33:
2.33 = (X - 12425) / 595:
X - 12425 = 2.33 * 595
X = (2.33 * 595) + 12425
X = 138111
Therefore, The manufacturer should advertise 13811 pages for each cartridge if it wants to be correct 99% of the time
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166.7 may be the answer but the question is very confusing
I do not understand what to do , more explicitly sorry :(
To find the percentage of any number you divide your percentage by 100 to get a decimal. 14 ÷ 100 =0.14 then in this case you need to find the number you want to find 14% of . Each reindeer harness is 17.95 so 17.95 * 9 = 161.55 so now you take 161.55 and multiply it by the decimal to get the percentage of 161.55 which equals 22.617 so now add the tax and the cost of the reindeer harnesses and you got your answer :)