# Answer in Statistics and Probability for isshin #244682

Weights of newborn babies in a particular city are normally distributed with a mean of

3360 g and a standard deviation of 450 g.

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Answer in Statistics and Probability for isshin #244682
Just from $13/Page a. A newborn weighing less than 2100 g is considered to be at risk because the mortality rate for this group is very low. If a hospital in the city has 900 births in a year, how many of those babies are in the “at-risk” category? b. If we redefine a baby to be at risk if his or her birth weight is in the lowest 1%, find the weight that becomes the cutoff separating at-risk babies from those who are not at risk. c. If 30 newborn babies are randomly selected as a sample in a study, find the probability that their mean weight is between 3000 g and 3500 g. X ~ “N(3360, 450^2)” a. “P(X<2100) = P(\frac{x-u03bc}{u03c3} < \frac{2100-3360}{450}) \\nn= P(Z < -2.8) \\nn= 0.002555 \\nnExpect = 900 \times 0.002555 \\nn= 2.299 \\nnu2248 2” If a hospital in the city has 900 births in a year, 2 of those babies are in the “at-risk” category. b. “P(Xu2264C) = 0.01 \\nnP(\frac{X-u03bc}{u03c3} u2264 \frac{c-3360}{450}) = 0.01 \\nnP(Z u2264 -1.88) = 0.01 \\nnfrac{c-3360}{450} = -2.32 \\nnc = 3360 + 450 \times (-2.32) \\nnc = 2316” If we redefine a baby to be at risk if his or her birth weight is in the lowest 1%, the weight that becomes the cutoff separating at-risk babies from those who are not at risk will be 2316 g. c. “P(3000 < \bar{X}<3500) = P( \frac{3000-3360}{450/ \sqrt{30}} <Z< \frac{3500-3360}{450/ \sqrt{30}}) \\nn= P( -4.38 <Z<1.70 ) \\nn= P(Z<1.70) – P(Z< -4.38) \\nn= 0.955434 -0.000031\\nn= 0.955403” If 30 newborn babies are randomly selected as a sample in a study, the probability that their mean weight is between 3000 g and 3500 g will be 0.955403. # What Will You Get? We provide professional writing services to help you score straight A’s by submitting custom written assignments that mirror your guidelines. #### Premium Quality Get result-oriented writing and never worry about grades anymore. We follow the highest quality standards to make sure that you get perfect assignments. #### Experienced Writers Our writers have experience in dealing with papers of every educational level. You can surely rely on the expertise of our qualified professionals. #### On-Time Delivery Your deadline is our threshold for success and we take it very seriously. We make sure you receive your papers before your predefined time. #### 24/7 Customer Support Someone from our customer support team is always here to respond to your questions. So, hit us up if you have got any ambiguity or concern. #### Complete Confidentiality Sit back and relax while we help you out with writing your papers. We have an ultimate policy for keeping your personal and order-related details a secret. #### Authentic Sources We assure you that your document will be thoroughly checked for plagiarism and grammatical errors as we use highly authentic and licit sources. #### Moneyback Guarantee Still reluctant about placing an order? Our 100% Moneyback Guarantee backs you up on rare occasions where you aren’t satisfied with the writing. #### Order Tracking You don’t have to wait for an update for hours; you can track the progress of your order any time you want. We share the status after each step. #### Areas of Expertise Although you can leverage our expertise for any writing task, we have a knack for creating flawless papers for the following document types. # Trusted Partner of 9650+ Students for Writing From brainstorming your paper's outline to perfecting its grammar, we perform every step carefully to make your paper worthy of A grade. ##### Preferred Writer Hire your preferred writer anytime. Simply specify if you want your preferred expert to write your paper and we’ll make that happen. ##### Grammar Check Report Get an elaborate and authentic grammar check report with your work to have the grammar goodness sealed in your document. ##### One Page Summary You can purchase this feature if you want our writers to sum up your paper in the form of a concise and well-articulated summary. ##### Plagiarism Report You don’t have to worry about plagiarism anymore. Get a plagiarism report to certify the uniqueness of your work. ## Free Features$66FREE

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