They were very helpful
I need help on problem number 20. (a) (b). I need work by tomorrow night 8 pm central time. Please let me know if you can read the attachment.
(1) students are confused by X<=60 inches tall and the % of X<= 60 inches tall (i.e., P(X<=60)) where X=the height, or simply confused z<=1.5 from P(Z<=1.5).
(2) What is the x by given P(X<=x) =0.01, where X is the height? Of course, x is something like 75 inches tall or so depending on the given normal probability distribution. X<=a, X>=b, a<=X<=b and the probabilities for X<=a, X>=b, a<=X<=b, are completely two different things.
(3) Some students got lost at the first moment of using Table 1 on PP. 764-765 to find P(Z<=-0.85) and P(Z<=1.25). Can you find the answers for P(Z<=-0.85)=0.1977 and P(Z<=1.25)=0.8944 from Table 1. If not, please ask yourself what the purple highlight in Table 1 is, and read the fine prints of the explanations on top of the Table. If you still have no clue about them, then it is the time you need to ask for help in Ch. 6 DB. You have to master the use of Table 1 ASAP and no later than Wednesday (basically, you can learn how to find P(Z<=-0.85)=0.1977 and P(Z<=1.25)=0.8944 in about 5 minutes). Once you know how to find P(Z<=-0.85)=0.1977 and P(Z<=1.25)=0.8944, you will be able to find the P(Z>=-0.85)=1-0.1977=0.8023, P(Z>=1.25)=1-0.894=0.1056, and P(-0.85<= Z <= 1.25)=P(Z<=1.25)-P(Z<-0.85)=0.8944-0.1977=0.6967, in no time. Knowing those in about 20 minutes, you have learned 1/4 of the chapter and you will be able to work on Q#8-Q#13. If by the morning of Wednesday, you are still not able to work on Q#18-Q#13, they you have to ask for help, or you may get lost for the rest of this semester.
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.Read more
Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.Read more
Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.Read more
Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.Read more
By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.Read more