Age at diagnosis for each of 20 patients under treatment for meningitis was given in a research paper. Suppose the ages (in years) were as follows.1818 20 18 19 28(a) Calculate the values of the sample mean and the standard deviation. (Round your standard deviation to four decimal places.)sample meanyryrstandard deviation(b) Compute the upper quartile, the lower quartile, and the interquartile range.upper quartileyrlower quartileyrinterquartile rangeyrmild outliers(c) Are there any mild or extreme outliers present in this data set? (Enter your answers as comma-separated lists. If there is no answer, enter NONE.)extreme outliers7018 25 19 22 20 64 18 21 18 20 18(d) Construct the boxplot for this data set.60-5040-30-2016 18 181아70-60-5040-30-2010-70-605040-30-201010950-4030-2010Q

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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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The mileage in miles per gallon of several cars when they were new and when they were 3 years old is listed below. New 27 17 33 28 24 18 22 20 29 3 years 24 15 29 25 22 16 20 18 26 The mean of the sample of new car mileages is x = 23.9 with a sample standard deviation of sx 5.2, and The mean of the sample of three year old car mileage is ỹ = 21.4 with a sample standard deviation of sy = 4.6. The linear correlation coefficient is r = 0.998, which suggests linear correlation. Find the regression line and use it to predict the mileage a car will have after 3 years, if it gets 26 miles per gallon when it is new.
Below are data of a correlation between two quiz scores, Quiz 1 and Quiz 2. What might you tell me about the results (.05 significance value)? Provide a brief description of the mean and standard deviation.
Answer 7 8 9 handwritten
Choose the appropriate statistical test. When computing, be sure to round each answer as indicated. A dentist wonders if depression affects ratings of tooth pain. In the general population, using a scale of 1-10 with higher values indicating more pain, the average pain rating for patients with toothaches is 6.8. A sample of 30 patients that show high levels of depression have an average pain rating of 7.1 (variance 0.8). What should the dentist determine? 1. Calculate the estimated standard error. (round to 3 decimals). [st.error] 2. What is thet-obtained? (round to 3 decimals). 3. What is the t-cv? (exact value) 4. What is your conclusion? Only type "Reject" or Retain"
Age at diagnosis for each of 20 patients under treatment for meningitis was given in a research paper. Suppose the ages (in years) were as follows. 18 18 20 18 19 mild outliers (a) Calculate the values of the sample mean and the standard deviation. (Round your standard deviation to four decimal places.) sample mean standard deviation extreme outliers 18 27 (b) Compute the upper quartile, the lower quartile, and the interquartile range. upper quartile lower quartile interquartile range 70- 60- 19 24 (c) Are there any mild or extreme outliers present in this data set? (Enter your answers as comma-separated lists. If there is no answer, enter NONE.) 50- (d) Construct the boxplot for this data set. 40- 30- 28 15 18 18 20 20 68 18 21 18 20 18 70 60- 50- 40- 30- 20 yr yr 10 yr yr yr O 70- 60- 50- 40 30 20 70 60 50 40- 30- 20 O
Age at diagnosis for each of 20 patients under treatment for meningitis was given in a research paper. Suppose the ages (in years) were as follows. 18 18 | 25 19 23 20 63 18 21 18 20 18 18 20 18 19 28 17 18 18 n USE SALT (a) Calculate the values of the sample mean and the standard deviation. (Round your standard deviation to four decimal places.) sample mean yr standard deviation yr (b) Compute the upper quartile, the lower quartile, and the interquartile range. upper quartile yr lower quartile yr interquartile range yr (c) Are there any mild or extreme outliers present in this data set? (Enter your answers as comma-separated lists. If there is no answer, enter NONE.) mild outliers extreme outliers
solve question 3 please
A Moving to another question will save this response. Question 1 Consider a sample with a mean of 30 and a standard deviation of 2.5. Use Chebyshev's theorem to determine the percentage of the data within the ranges from 23 to 37. O a. 61% O b. 75% O c. 87% Od. 83%
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Refer to the below table. Using an alpha = 0.05, test the claim that IQ scores are the same for children in three different blood lead level groups: low lead level, medium lead level, and high lead level). One-Way Analysis of Variance Summary Table for IQ Measurements for Children among Three Blood Lead Level Groups: Low Lead Level, Medium Lead Level, and High Lead Level. Source df SS MS F p Between-group (treatment) 2 469.1827 2677.864 2.30 0.104 Within-group (error) 118 203.6918 11745.05 Total 120
Exhibit 9-41 A random sample of 9 students selected from the student body of a high school had an average age of 14 years. We want to determine if the average age of all the students at the high school is significantly different from 13. Assume the distribution of the population of ages is normal with a standard deviation of 1 year. Refer to Exhibit 9-41. What is the p-value for this test? 0.00135 0.0027 1.96 0.0045

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