The following data shows the death cases of COVID-19, x and the number of positive COVID-19 cases,y in Indonesia from 29 December 2021 until 5 January 2022.Positive cases, yDeath cases, XDate29/12/202122430/12/2021241131/12/20212051/1/20221912/1/202213513/1/20221674/1/202220615/1/20222452a) Determine the regression line equation.b) Draw the best fit line at the scatter plot using regression line equation youobtained in (a).c) Compute the value of the correlation coefficient and comment.d) Compute the value of coefficient determination and comment.

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Arsenic is a compound that occurs naturally in very low concentrations. Arsenic blood concentrations in healthy individuals are Normally distributed with a mean of 3.2 mg/dl. Some areas of the United States have naturally elevated arsenic levels in the ground and water supplies. Researchers took a sample 20 water samples from a particular area and measured the arsenic levels in each of the 20 water samples. They want to determine if there is sufficient evidence to conclude that the arsenic level in that area is higher than 3.2 mg/dl. hypothesis test for one population mean (unknown population standard deviation) confidence interval estimate for one population mean (unknown population standard deviation) hypothesis test for population mean from paired differences confidence interval estimate for population mean from paired differences hypothesis test for difference in population means from two independent samples confidence interval estimate for difference in population means from two…
For a correlation of -64 between X and Y, each1-SD change in zx corresponds to a predicted change of __SD in zy
The board of ‘NAZH Hospital’ desires to analyze the waiting time in minutes for the Covid vaccine dose of the first 100 patients. The data in Table 1.1 below shows the waiting time of patients for Covid vaccine dose: 14 25 51 58 16 54 13 12 17 45 39 25 51 43 43 10 14 32 45 51 40 21 13 42 16 10 35 14 14 40 31 55 11 52 15 42 21 55 39 28 39 48 30 28 21 49 31 48 54 29 11 22 27 32 38 38 22 21 41 17 25 22 50 31 20 46 21 27 22 24 36 38 21 14 33 52 60 35 47 51 13 24 50 14 54 36 19 53 29 49 16 39 47 56 60 36 40 16 13 16 a) Compute the 35th and 58th percentile. b) Compute the average waiting time of 1st and 3rd quartile. c) Draw a box plot for the above data.
The international Human Genome Project yielded the DNA sequence of all 23 human chromosomes, each consisting of millions of nucleotides chained end to end. These encode the genes whose products-RNA and proteins-shape the growth and development of each individual. The length of each gene refers to the total number of nucleotides comprising the coding regions. A random sample of 100 human genes from the human genome was found to have a median length of 2640.5 nucleotides. Select the true statement(s) about the obtained median. A). The median gene length of all human genes is estimated to be 2640,5 nucleotides. B). A random sample of 1000 genes would likely yield an estimate of the median closer to the population median than a random sample of 100 genes. C). The sample median has a sampling distribution with a standard error. D) The median gene length of all human genes is 2640.5 nucleotides.
The article “State and Federal Data on COVID-19 Testing Don’t Match Up” by Meyer and Madrigal in May 2020 stated that Florida had reported conducting 700,000 coronavirus tests, yet the Centers for Disease Control and Prevention reported Florida had conducted 919,000. The difference between these reports is 219,000 tests. What is the difference between the number of tests Florida reported administering and the number the CDC reported the state-administered as a percent of the number of tests reported by Florida? Round your answer to the nearest hundredth of a percent.
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The number of Muslims continues to grow throughout the world, and they are currently thesecond-largest religious group in the world. Knowing that this group has been the target of falsebeliefs about their religion, a researcher is interested in whether people who have moreinteractions with Muslim people are less likely to believe negative statements about Islam. To dothis, they surveyed a large sample of participants across Western Europe and asked themquestions about how frequently they interact with Muslim people as well as how much theyagreed with negative statements about Islam. What statistical test should be used to determine ifthere if how frequently survey participants interact with Muslim people predicts how likely theyare to agree with a negative statement about Islam? Assume parametric assumptions are met. A. Is this a relationship test or a difference test? Explain your rationale. B.
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A research study was conducted about gender differences in 'sexting'. The researcher believed that the proportion of girls involved in 'sexting' is different from the proportion of boys involved. The data collected in the spring of among a random sample of middle and high school students in a large school district in is summarized next: out of 380 females 43 sent 'sexts' and out of 410 males 64 sent 'sexts'. Is the proportion of girls sending sexts different from the proportion of boys 'sexting'? Choose the appropriate procedure. Procedure: Assumptions: (select everything that applies) Population standard deviations are known Normal populations Sample sizes are both greater than 30 Population standard deviation are unknown but assumed equal Paired samples Population standard deviation are unknown Simple random samples The number of positive and negative responses are both greater than 10 for both samples Independent samples

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