The data below represents the overall miles per gallon (MPG) of 2008 SUVS priced under $30,000. Complete parts aand b below.22, 20, 19, 23, 18, 18, 17, 17, 20, 19, 18,18, 22, 17, 20, 17, 16, 17, 16, 21, 18, 21a. Construct a 95% confidence interval estimate forunder $30,000, assuming a normal distribution.population mean miles per gallon of 2008 SUVS pricedsps(Round to two decimal places as needed.)b. Interpret the interval constructed in (a). Choose the correct answer below.O A. With 95% confidence, the mean miles per gallon in the sample of 2008 SUVs is the population mean.OB. With 95% confidence, the mean miles per gallon in the sample of 2008 SUVs is somewhere in the interval.OC. With 95% confidence, the mean miles per gallon in the population of 2008 SUVs is the sample mean.OD. With 95% confidence, the mean miles per gallon in the population of 2008 SUVs is somewhere in the interval.Clear allCheck answer

The question is about confidence interval.Given :Total no. of observations in the sample ( n ) = 22

Answered: The data below represents the overall…

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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Suppose you are a researcher in a hospital. You are experimenting with a new tranquilizer. You collect data from a random sample of 13 patients. The period of effectiveness of the tranquilizer for each patient (in hours) is as follows: Hours 2.1 2.3 2.8 2.8 2.6 2.7 2 2.2 2.5 3 2.2 2.9 2.9 a) What is a point estimate for the population mean length of time. (Round answer to 4 decimal places) b) What must be true in order to construct a confidence interval in this situation?
tled1.tst 1 / 1 dent/Downloads/Math%201332%20Activity%20%236.pdf X 1 Find the mean, mode, median and midrange. 2) 2 Score Frequency 3 4 5 X 6 Math 1332 Activity #6.pdf: 6231- 7 8 9 10 119% + B HLSATOOGEE f 1 5 4 7 6 10 12 11
Pavan.0.0
igure 3 Answer the following questions about the relationships between pairs of variables and the values of r, the sample correlation coefficient. The same response may be the correct answer for more than one question. 10.0 8.0 Figure 4 (a) For which data set is the sample correlation coefficient r closest to 0? the , f data set V (b) Which data set indicates the strongest negative linear relationship between its two variables? the x, y data set (c) For which data set is the sample correlation coefficient requal to - 1? none of the data sets ▼ (d) Which data set has an apparent positive, but not perfect, linear relationship between its two variables? the m, n data set
The following set of data represents the number of orders filled by a national-chain restaurant during a two week period. Construct a five number summary for the the data. 66, 75, 68, 89, 86, 73, 67, 75, 75, 82, 85, 74, 67, 61 (Round to the nearest hundredth, if needed). Min _________________ Lower Quartile _________________ Median __________________ Upper Quartile _________________ Maximum __________________ What is the range and the interquartile range (IQR)? Range __________________ Interquartile Range (IQR) ___________________
2. Which of the following graphs represent a normal distribution? Chart A 20 15 10 (1, 5.4) (5.4, 9.8) (9.8, 14.2) (14.2, 18.6) (18.6, 23] (23, 27.4] Chart B 19 0.5 Category 1 Category 2 Category 4 Chart C 20 [1, 6) 16. 111 (11, 16] (16, 21] (21, 26] Chart D 25 15 10 (1,7.4) (74, 13.8) (13.8, 20.2) (20.2, 26.6]
Below are bivariate data giving birthrate and life expectancy information for each of twelve countries. For each of the countries, both the number of births x per one thousand people in the population and the female life expectancy y (in years) are given. These data are displayed in the Figure 1 scatter plot. Birthrate, x (number of births per 1000 pop.) 16.5 35.3 39.8 17.7 30.1 27.0 13.4 47.2 49.6 49.8 48.0 24.5 Send data to calculator Female life expectancy, y (in years) 76.0 66.6 65.7 74.1 64.1 71.7 72.0 56.7 54.4 57.7 63.6 74.5 Send data to Excel Female life expectancy (in years) 85. Figure 1 80- 75- 70. 65. 60 55 50 15 20 25 30 35 40 45 50 55 Birthrate (number of births per 1000 pop.) The value of the sample correlation coefficient r for these data is approximately - 0.909. Answer the following. Carry your intermediate computations to at least four decimal places, and round your answers as specified below. (If necessary, consult a list of formulas.) (a) What is the value of the…
The accompanying data were read from a plot (and are a subset of the complete data set) given in an article. The data represent the mean response times for a group of individuals with closed-head injury (CHI) and a matched control group without head injury on 10 different tasks. Each observation was based on a different study, and used different subjects, so it is reasonable to assume that the observations are independent. y = Study 1 2 3 4 5 6 7 8 9 10 Mean Response Time CHI 302 492 658 684 922 1044 1421 1329 1481 1815 t = Control 250 360 475 (a) Fit a linear regression model that would allow you to predict the mean response time for those suffering a closed-head injury from the mean response time on the same task for individuals with no head injury. (Round your answers to four decimal places.) 525 610 740 880 920 1010 1200 (b) Do the sample data support the hypothesis that there is a useful linear relationship between the mean response time for individuals with no head injury and the…
Question 3, 10.4.52
Below are four bivariate data sets and their scatter plots. (Note that all of the scatter plots are displayed with the same scale.) Each data set is made up of sample values drawn from a population. 1.0 10.0 2.0 9.0 3.0 8.0 1.0 2.7 2.0 4.2 3.0 3.3 4.0 5.2 5.0 4.1 6.0 6.9 4.0 7.0 5.0 6.0 6.0 5.0 7.0 4.0 7.0 6.0 8.0 3.0 9.0 2.0 8.0 7.4 9.0 7.2 10.0 1.0 Figure 1 10.0 8.0 Figure 2 1.0 7.9 2.0 5.8 3.0 3.1 4.0 1.7 4 5.0 1.6 6.0 1.2 7.0 1.6 8.0 3.2 9.0 5.5 10.0 6.9 Figure 4 1.0 7.8 2.0 9.0 3.0 7.4 4.0 5.5 5.0 8.2 6.0 4.9 7.0 4,9 2- 2- 8.0 6.8 9.0 6.0 10.0 3.4 Figure 3 Answer the following questions. The same response may be the correct answer for more than one question. (a) Which data set indicates a perfect negative linear relationship between its two variables? ? (Choose one) (b) In which data set is there evidence of a strong nonlinear relationship between the two variables? (Choose one) (c) Which data set has an apparent negative, but not perfect, linear relationship between its two…
Question 1. Greater than or Less than. Question 2. IS or IS NOT.
QUESTION 2 An environmentalist wanted to determine if the mean acidity of rain differed among Ipoh, Johor Bahru and Kuantan. He randomly selected six rain dates at each city and obtained the following data: Table 2 Ipoh 5.10 5.00 4.91 5.12 4.78 5.20 Johor Bahru 4.80 4.15 4.42 4.65 4.87 4.10 Kuantan 5.45 6.23 5.55 5.10 5.42 5.25 Answer the following questions without using any output from any software. a) Construct a complete Analysis of Variance table. b) At <= 0.05, test whether the mean acidity of rain is different among the three cities. c) Based on the answer in (a) and (b), write a brief conclusion on the mean acidity of rain among Ipoh, Johor Bahru and Kuantan.

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