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Advanced Math

Please

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A home pregnancy test was given to women, then pregnancy was verified through blood tests. The following table shows the home pregnancy test results. Positive Negative Total Pregnant 58 8 66 Not Pregnant 5 79 84 Total 63 87 150 Round your answers to the nearest thousandth.`P`(positive`|`pregnant) = `P`(pregnant`|`positive) = `P`(negative`|`pregnant) = `P`(not pregnant`|`negative) =
Can you help me with the code for how to do this in R please? 1. The study "Digital Footprints" ([Pew Internet and American Life Project]("Digital Footprints" (Pew Internet and American Life Project)) reported that 47\% of Internet users have searched for information about themselves online. The 47\% figure was based on a random sample of Internet users. Suppose that the sample size was `n = 400`. i) Use this information to estimate the true proportion of Internet users who searched information about themselves using a default 95\% confidence interval. ii) Repeat (i) but instead use a 98\% Confidence Level. Use function `prop.test()`. iii) What is the main difference between the intervals computed in (i) and (ii)? What do you think is the role of the confidence level in determining the precision of the confidence interval estimate?
I am having problems on understanidng where to start with my homework. i know i am supposed to stat with seperating the left side of the eqution but i am not sure if i did it correctly. Could you please look over my work and see if i did the problem correctly?. I have attached the question and my work.
Based on Information from a previous study, r, = 39 people out of a random sample of n, 98 adult Americans who did not attend college belleve in extraterrestrials. However, out of a random sample of n, = 98 adult Americans who did attend college, r, = 46 clatm that they believe in extraterrestrials. Does this Indicate that the proportion of people who attended college and who beleve in extraterrestrials is higher than the proportion who did not attend college? Use a = 0.01. (a) what is the level of ugnificance? state the null and alternate hypotheses. O H, P, = Pzi H P, P2 (b) what sampling distribution will you use? what assumptions are you making? O The standard normal. The number of trials is sufficiently large. O The Student's t. We assume the population distributions are approximately normal. O The Student's t. The number of trials is sufficiently large. O The standard normal. We assume the population distributions are approxlmately normal. What is the value of the sample test…
estnavclient.psonsvc.net/#/question/1429fac6-f27b-4c12-86d0-e9ffb3f15887/d5138119-f806-4fd4-bd04-cbe9aa7c6acc Review - A Bookmark Paiz Guevar S Math 1 Unit 3 Test 2020 / 3 of 11 II Paus If B is the midpoint of AC, with point A at (5, 2) and point C at (9, 0), what is the equation of the line perpendicular to AC that passes through B? O A. y=-½x- 13 O B. y= 2x– 13 O C. y=-½ x + 5 O D. y = 2x + 5 čms US
I received feedback from my teacher for this Intro to probability and staatistics homework problem. He said please check your work. I don't know what I did wrong. Hypergeometric geometric Suppose (22 Jolly ranchers total) and 5 out of which are blue, Now random Jolly ranchers divide evenly into two segments So, (n = 22/2 = 11) P(one obtains all 5 blue Jolly ranchers) = ? Now, K = 5 r = 5 N = 22 n = 11(divided 22 Jolly ranchers evenly into two segments ) P(X = 5) = 5C5 x 17C2 / 22C11 P(X = 5) = 0.00019278 rounded to 0.0002
critical value and p value are wrong. please fix that!!
In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. At five weather stations on Trail Ridge Road in Rocky Mountain National Park, the peak wind gusts (in miles per hour) for January and April are recorded below. Weather Station 1 4 120 126 64 78 January April 139 104 111 100 88 61 Does this information indicate that the peak wind gusts are higher in January than in April? Use a = 0.01. (Let d = January- April.) (a) What is the level of significance? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? O Ho: Hg> 0; H,: Hj= = 0; right-tailed O Ho: Hg = 0; H,:0; left-tailed O Ho: H = 0; H,:H# 0; two-tailed O Ho: Hg = 0; H, > 0; right-tailed (b) What sampling…
I am trying to solve this, please help me out its an homework quetion