# Answer in Statistics and Probability for Azeem #266539

A manufacturer of polygraphs lie detector claims that its machines can corrrectly distinguish truthful responses to question 78% of the time if the machine is tested using a set of 60 questions determine the mean and standard deviation for this bernoulli process

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Answer in Statistics and Probability for Azeem #266539
Just from $13/Page Bernoulli proccess is a sequence of independent equally distributed bernoulli random variables Let X be a random variable represent the amount of correctly distinguished truthful responses, then “X=X{\scriptscriptstyle 1}+…+X{\scriptscriptstyle 60}” , where each “X{\scriptscriptstyle 1},…,X{\scriptscriptstyle 60}” can take value 1 with p = 0.78 and 0 with q = 0.22 Which means that X has binominal distribytion with n = 60, p = 0.78 X ~ Bin(0.78, 60) The mean of X is “m=0.78 * 60 = 46.8” The variance is “d = 60 * 0.78 * (1-0.78) = 10.296” The standard deviation is “\sigma = \sqrt{d}=\sqrt{10.296}\approx3.21” # 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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