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stats midterm, I have uploaded the instructions from my professor I can send you all assignments and solutions for review

Date Posted: 27/10/2020
Category: Math
Due Date: 28/10/2020
Instruction
Midterm, start at 1:30 to 2:30pm Atlantic time, Canada please be sure to upload solution by 2:15to give me time to convert them to PDF and submit them
Attached
Download File 1 (docx)
Tutor Uploads
Download File 1 (docx)
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COMMITEDTUTOR 5 years, 11 months ago
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    Excellentessays | Oct 27, 2020, 13:03 PM
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aggrey 5 years, 11 months ago
Rated 9.47 earned 33434.92 around 816 assignments.
Hello friend
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  • thank you once the professor posts the questions I will send them to you
    User_31090 | Oct 27, 2020, 14:39 PM
  • No problem. The other option would be to give me the login details but you will have to copy again, no need
    aggrey | Oct 27, 2020, 14:41 PM
  • it will not allow me to send personal information l
    User_31090 | Oct 27, 2020, 15:12 PM
  • https://app.crowdmark.com/sign-in/unb username: a3n62 (at sign) unb (dot) ca password: Liv3Lov3(1967)
    User_31090 | Oct 27, 2020, 15:12 PM
  • Okay. I will check
    aggrey | Oct 27, 2020, 15:13 PM
  • were you able to log in?
    User_31090 | Oct 28, 2020, 12:51 PM
  • Not really. It did not work
    aggrey | Oct 28, 2020, 12:59 PM
  • oh I'm sorry, what error did u get?
    User_31090 | Oct 28, 2020, 13:03 PM
  • Invalid credentials.
    aggrey | Oct 28, 2020, 13:04 PM
  • can u try logging in my.unb.ca using the username and password I gave previously? maybe you need to be logged in the UNB site first?
    User_31090 | Oct 28, 2020, 13:06 PM
  • I think I will just wait for you to upload the questions here
    aggrey | Oct 28, 2020, 13:08 PM
  • ok no prob
    User_31090 | Oct 28, 2020, 13:10 PM
  • Hello. Is it up yet?
    aggrey | Oct 28, 2020, 16:22 PM
  • not yet
    User_31090 | Oct 28, 2020, 16:28 PM
  • uloading it now
    User_31090 | Oct 28, 2020, 16:31 PM
  • Okay
    aggrey | Oct 28, 2020, 16:32 PM
  • A study was carried out in women to determine whether the psychological consequences of having an abortion differ from those experienced by women who have lost their fetuses by other causes at the same stage of pregnancy. (a) (1 pt) Was this an observational study or experimental study? (b) (1 pt) What is the explanatory variable in this study? (c) (1 pt) Is the explanatory variable categorical or numerical?
    User_31090 | Oct 28, 2020, 16:32 PM
  • In a study of milk production in sheep (for use in making cheese), a researcher measured the three-month milk yield for each of 11 ewes. The yields (liters) were as follows: 56.5, 89.8, 110.1, 65.6, 63.7, 80.8, 75.1, 91.5, 102.9, 44.4, 108.1 (a) (1 pt) What is the sample mean of the data? (b) (1 pt) What is the sample standard deviation? (c) (1 pt) What is the coefficient of variation for the data? (d) (1 pt) What is the standard error of the mean? (e) (2 pts) Using the 2SE rule of thumb, calculate an approximate 95% confidence interval for the population three-month mean yield. (f) (1 pt) Assume that you calculated an approximate 95% confidence interval for a population mean as (1.5,2.4)(1.5,2.4) . Is the following statement correct? Explain briefly. "The true population mean lies in (1.5,2.4)(1.5,2.4) 95% of the time.''.
    User_31090 | Oct 28, 2020, 16:32 PM
  • Suppose that a student who is about to take a multiple choice test has only learned 60% of the material covered by the exam. Thus there is a 60% chance that she will know the answer to a question and get it right. However, even if she does not know the answer to a question, she still has a 20% chance of getting the right answer by guessing. (a) (2 pts) If we choose a question at random from the exam, what is the probability that she will get it right? (b) (2 pts) Given that she has got a randomly chosen question right, what is the probability that she has got the right answer by guessing?
    User_31090 | Oct 28, 2020, 16:32 PM
  • You are working in a lab and need to have five clean Petri plates for your experiment tomorrow. You have eight plates prepared, but your colleague tells you that 10% of them will, on average, be contaminated and unusable by tomorrow. If your colleague is right, (a) (2 pts) What is the distribution for the number of contaminated plates? Specify the parameter values of the distribution. (b) (2 pts) What is the probability that you will have exactly five usable plates available tomorrow?
    User_31090 | Oct 28, 2020, 16:32 PM
  • Following question Q4. It turns out three out of the eight plates were contaminated by the time of your experiment. (a) (1 pt) What is the best guess of the proportion of contaminated plates? (b) (2 pts) What is the 95% confidence interval for the proportion of contaminated plates? Use the Agresti-Coull formula. Suppose that you conduct a two-sided hypothesis test for your colleague's claim that 10% of plates will be contaminated. (c) (1 pt) What is the appropriate null hypothesis? (d) (1 pt) What is the appropriate alternative hypothesis? (e) (1 pt) What test statistic will you use? (f) (1 pt) The P-value of the test is 0.038. Using α=0.01α=0.01 , what conclusion will you draw?
    User_31090 | Oct 28, 2020, 16:33 PM
  • it would not let me upload so I copy and pasted here
    User_31090 | Oct 28, 2020, 16:33 PM
  • did u get the questions?
    User_31090 | Oct 28, 2020, 16:35 PM
  • Please use filebin.net and send me the link
    aggrey | Oct 28, 2020, 16:38 PM
  • I dk how to use that
    User_31090 | Oct 28, 2020, 16:40 PM
  • https://filebin.net/5jeycj1em9wsfva1
    User_31090 | Oct 28, 2020, 16:42 PM
  • did u get it?
    User_31090 | Oct 28, 2020, 16:43 PM
  • Yes
    aggrey | Oct 28, 2020, 16:46 PM
  • Is that all?
    aggrey | Oct 28, 2020, 16:49 PM
  • Working required?
    aggrey | Oct 28, 2020, 16:51 PM
  • yes it is all, yes please need to show work
    User_31090 | Oct 28, 2020, 16:53 PM
  • if possible, there is no instructions abut showing work. but I know always get partial points for it
    User_31090 | Oct 28, 2020, 16:55 PM
  • here are the instructions: You may use any books or any online materials during the exam. The only restriction is that you cannot collaborate with other students or consult other people. You may use R or another statistical package as an aid to answer the questions. If you cannot find the answer to a part and that answer will be used in other parts, you may make up a number for that answer and carry on. If you think a question is ambiguous or even incorrect, please indicate clearly how you interpret it and proceed.
    User_31090 | Oct 28, 2020, 16:56 PM
  • oh wait wrong one
    User_31090 | Oct 28, 2020, 16:56 PM
  • no this one does not have instructions, that was from the class I took this summer
    User_31090 | Oct 28, 2020, 16:57 PM
  • https://1drv.ms/w/s!AtYkQ8Ql8UW-x2dH9U4dDzh142fS?e=LgUtr6
    aggrey | Oct 28, 2020, 17:15 PM
  • This is my working area. You can see as I type live
    aggrey | Oct 28, 2020, 17:16 PM
  • perfect thanks
    User_31090 | Oct 28, 2020, 17:19 PM
  • sorry but there is 5 min left
    User_31090 | Oct 28, 2020, 17:25 PM
  • Can you see my working. Once it's a minute left just download and submit. Thanks
    aggrey | Oct 28, 2020, 17:28 PM
  • You had said I do the workings
    aggrey | Oct 28, 2020, 17:28 PM
  • Were you able to download?
    aggrey | Oct 28, 2020, 17:33 PM
  • its ok I asked for a few minutes to upload it, srry... I'm just stressed. its not your fault
    User_31090 | Oct 28, 2020, 17:33 PM
  • I've done all the questions though
    aggrey | Oct 28, 2020, 17:35 PM
  • can you finish it? I'm sorry
    User_31090 | Oct 28, 2020, 17:35 PM
  • I don't se question 5
    User_31090 | Oct 28, 2020, 17:36 PM
  • I'm on the fifth question and almost done.
    aggrey | Oct 28, 2020, 17:40 PM
  • Done!
    aggrey | Oct 28, 2020, 17:48 PM
  • perfect ty ty soooo much. I will release the funds as promised tomorrow
    User_31090 | Oct 28, 2020, 17:49 PM
  • Thanks
    aggrey | Oct 28, 2020, 17:51 PM
  • Hello I have a new stats assignment due this weekend. Was wondering if u could work it
    User_31090 | Nov 04, 2020, 22:03 PM
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