Compute the following data and determine if the null hypothesis is rejected or not.STUDENTS1234567891011121314Compute the following:MIDTERM GRADES7574767880909188778995937271FINAL GRADES80767574859587887990939078791. Mean2. Variance3. Standard Error of Difference Between Means4.T- Statistics5. Determine the Critical Value →df (Degree of Freedom)6. Compare the T-value (Computed Value) to the Critical Value (From the Table)7. Decision

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Answered: Compute the following data and…

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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1. The following data are the protein content of bean. 159 338 657 259 276 386 179 229 742 149 408 667 275 266 463 147 275 411 154 209 636 256 306 147 264 412 192 339 589 245 315 412 145 241 745 a) Mean .. Median Mode.... b) Variance Rang Stander division ..... c) What is the value of d? Upper 80 % confidence limit Lower 80% confidence limit What is the value of class interval when number of classes is 7? ...
It was reported that 53% of people who had coronary bypass surgery in a recent year were over the age of 65. Fifteen coronary bypass patients are sampled. What is the probability that exactly 9 of them are over the age of 65? O 60.95% O 78.75% O 39.05% O 17.80%
7 Under imperfect multicollinearity A. the OLS estimator will be biased. B. the OLS estimator will have a large variance. C. there will be dummy variable trap. D. the OLS estimator cannot be computed.
Subject Extroversion Neuroticism 1 43 49 2 46 53 3 48 67 4 48 57 5 48 56 6 50 48 7 51 60 8 51 41 9 53 51 10 58 47 11 62 41 12 63 51 13 63 30 14 63 28 15 67 55 16 67 47 17 67 39 7. What is the standard error of the correlation coefficient for the association of extroversion and neuroticism in personalities.xls? 8. Carry out a formal t-test for the association between extroversion and neuroticism in personalities.xls. H0: The population correlation coefficient is 0. HA: The population correlation coefficient is not 0. What is the value of the t-statistic corresponding to this test? (Report the absolute value. The t-distribution is symmetric, thus it is easier to compare the absolute value of the t-statistic with the positive values in statistical table C). 9. Carry out a formal t-test for the association between extroversion and neuroticism in personalities.xls. H0: The population correlation coefficient is 0. HA: The population correlation coefficient is not 0. What is the critical…
Solve the following problem. Show your complete solution. 2. Joe, a DOH COVID-19 tracker, found out that the number of infected persons of COVID-19 in seven low-risk provinces of the country are 1, 9, 2, 12, 8, 7, and 10. Suppose that 5 provinces are drawn as sample. a.) What is the mean (?), variance (?2) and standard deviation of the population (σ)? b.) How many different samples of size n =5 can be drawn from the population? List them with their corresponding mean. c.) Construct the sampling distribution of the sample mean.
For table 3, determine the following point estimates: 1. The mathematical expectation. 2. The variance. 3. The root mean square deviation 4. Correlation coefficient between X and Z
2) Kate works as a manager at a call center. She wants to observe how waiting times of customers to be assigned with a representative show variation so that she can schedule the working hours of employees accordingly. Her claim is that variance between waiting times is no more than 60 minutes. She keeps track of waiting times for 22 customers which are given below: 35 29 12 35 16 28 37 13. 14 38 15 39 23 26 29 16 19 23 15 25 17 28 Kate wants to find the smallest Type 1 error probability that allows her to reject Ho. Define an interval for such Type 1 error probability.
a firm has two investment projects project A : expected profit = $ 670 SD = 175 coefficient of varience = 0.26 project B : expected profit = $700 SD = 370 coefficient of variance = 0.53 a. which project has a lower absolute risk ? b. whick project has a lower relative risk ? C . which project would you advice the firm to choose ?
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…
Class Frequency :Q3) For the following data 50-54 55-59 60-64 65-69 70-74 75-79 80-84 3 7 10 16 12 9 3 f) The coefficient of variance :is 11.3680 11.6308 11.6830 11.8603 O none of all above O
1. The following data gives the number of social interactions of longer than 10 minutes in one week for a group of college students. 12 2 7 17 22 27 32 37 42 47 Compute the range, variance, and standard deviation.

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