What part of these two questions am i misunderstanding? I'm comparing DS58 with PS129
in DS58, when d a number, is rounded to the nearest tenth , the result is .5, so the book assumes it ranges between 0.45 to 0.54 and it makes sense. it also says that when d is rounded to the nearest integer, it values is 1, so the book assumes it ranges from .5 to 1.4, again i get this.
What is confusing is how it is dealth with in question PS129, details below. you can review the quetion stem in the book but the answer comes out to 284/12.5 to 295/11.4 but I thought if we rounded them based on basic math rounding rules, it should be 285/12.4 to 294/11.5. based on the logic that if a number rounded to the nearest tens is 290, it must range from 285 to 294, same thing with 12 gallons, if its rounded to the units digit, then it must be between 11.5 to 12.4, how does the book get those numbers?
Can someone help me out please!!
thanks
in DS58, when d a number, is rounded to the nearest tenth , the result is .5, so the book assumes it ranges between 0.45 to 0.54 and it makes sense. it also says that when d is rounded to the nearest integer, it values is 1, so the book assumes it ranges from .5 to 1.4, again i get this.
What is confusing is how it is dealth with in question PS129, details below. you can review the quetion stem in the book but the answer comes out to 284/12.5 to 295/11.4 but I thought if we rounded them based on basic math rounding rules, it should be 285/12.4 to 294/11.5. based on the logic that if a number rounded to the nearest tens is 290, it must range from 285 to 294, same thing with 12 gallons, if its rounded to the units digit, then it must be between 11.5 to 12.4, how does the book get those numbers?
Can someone help me out please!!
thanks
