Conduct a hypothesis testing to test the given claim about the means of two populations. Assume that two dependent samples have been randomlyselected from normally distributed populations.2) The table below shows the weights of seven subjects before and after following a particular diet for twomonths.Using a 0.01 level of significance, test the claim that the diet is effective in reducing weight.SubjectsABCDEFGBefore153180162173181167156After146171160178167169144

BEF AFT D =BEF - AFT A 153 146 7 B 180 171 9 C 162 160 2 D 173 178 -5 E 181 167 14 F…

Answered: Conduct a hypothesis testing to test…

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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he accompanying data are x = advertising share and y = market share for a particular brand of cigarettes during 10 randomly selected years. x 0.103 0.073 0.071 0.077 0.086 0.047 0.060 0.050 0.070 0.052 y 0.132 0.126 0.122 0.086 0.079 0.076 0.065 0.059 0.051 0.039 (a) Calculate the equation of the estimated regression line. (Round your answers to six decimal places.)y = Obtain the predicted market share when the advertising share is 0.09. (Round your answer to five decimal places.)(b) Compute r2. (Round your answer to three decimal places.)(c) Calculate a point estimate of ?. (Round your answer to four decimal places.)On how many degrees of freedom is your estimate based?
the next question prevents changes to this answer. Question 2 Determine the quartile. The weights (in pounds) of 18 randomly selected adults are given below. Find the third quartile, Q 3 120 165 187 143 119 132 127 156 179 159 180 202 114 146 151 168 173 144 176 lb 174.5 lb 173 lb 170.5 lb A Moving to the nat
Being overweight or obese may increases your risk of developing high blood pressure. The weight and systolic blood pressure of 13 randomly selected males in the age group 25 to 30 are shown in the table below. Subject Weight (lb) Systolic BP (mmHg) 1 164 130 2 167 133 3 180 146 4 155 128 5 210 151 6 175 146 7 190 150 8 202 140 9 200 148 10 149 125 11 158 133 12 169 135 13 170 143 Decide which variable should be the response variable (y) and which should be the explanatory variable (x). Describe the relationship. You may draw the scatter plot if you like, but it is not required. What is the correlation of coefficient? What can you tell from the correlation of coefficient?
Number of Flights Arriving on Time Number of Flights Arriving Late Sunshine Airline 33 5 Comfort Airlines 43 6 The table above contains data from a study of two airlines - Sunshine Airlines & Comfort Airlines - which fly from BWI to Shore City, FL. If one flight is selected, find P (on time and Comfort Airlines).
Need C and D
The data show the number of hours of television watched per day by a sample of 28 people. Use technology to answer parts (a) and (b) below. 0 9 00 6 8 = 5 5 3 0 F3 4 3 4 -6 a. Find the data set's first, second, and third quartiles. Q₁ = Q₂ = Q3 (Type integers or decimals. Do not round.) 5 1 2 3 7 3 9 287 5 9 2 b. Draw a box-and-whisker plot that represents the data set. Choose the answer below. Note that different technologies will produce slightly different results. O A. B. 670 9 6 3 2 0 -co C. 0 3 6 -S 9 N
Which of the following can increase effect size? Select one: O a. increase the distance between means and increase the sample size O b. decrease the variability and increase the distance between means O c. decrease the variability and increase the sample size
A new vaccination is being used in a laboratory-experiment to investigate whether it is effective. There are 258 subjects in the study. Is there sufficient evidence to determine if vaccination and disease status are related? Vaccination Status Diseased Not Diseased Total Vaccinated 55 62 117 Not Vaccinated 70 71 141 Total 125 133 258 Copy Data Step 6 of 8: Find the critical value of the test at the 0.025 level of significance. Round your answer to three decimal places.
3. Can SAT scores predict college performance? Let x be a variable that represents SAT score of a computer science major, and let y be a variable that represents a student’s GPA upon graduation. A random sample of n =15 computer science majors provided their SAT scores and GPAs: x 1232 1070 1086 1287 1130 1048 1121 1095 1135 1208 1333 1160 1186 1243 1261 y 3.52 2.91 2.4 3.47 3.47 2.37 2.4 2.24 3.02 3.32 3.59 2.54 3.19 3.71 3.58 The scatter diagram for the SAT score and GPA is given below: (a) Find the sample correlation coefficient r. Truncate to two decimal places. What does the value tell you about the data? (b) Find the equation of the least squares line . Truncate to four decimal places. What does the slope mean? (c) Find the value of the coefficient of determination . Truncate to two decimal places. What does this number mean? (d) What is the predicted GPA if a computer science major got a…
Johnson and Leone describe an experiment to investigate the warping of copper plates. The two factors studied were temperature and the copper content of the plates. The response variable was a measure of the amount of warping. The data are as follows: Temperature (°C) 50 75 100 Copper Content (%) 40 60 80 100 17 20 12 9 16 12 21 17 21 16 24 21 18 13 18 21 ZZFEHERRE 23 22 27 17 27 31 30 23 29 31 12 25 23 23 28 22 125 Source: Applied Statistics and Probability for Engineers, 6th Edition, Douglas, C. Montgomery & George, C. Runger. 1. Draw and interpret the interaction plot. ii. Is there any significant interaction between the factors? Use a = 0.05. ii. Can your interpretation in (i) be validated in (ii)? Twelve plants are randomly
Provide an appropriate response. Data sets A and B are dependent. Find sa. 13 11 30 26 14 11 7. 8. 18 Assume that the paired data came from a population that is normally distributed. 07.8 O 6.8 O8.9 05.6

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