MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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pleaseee sir solve question 25

*Assume that the random variable X is normally distributed, with mean - 45 and standard deviation 6-16. Answer the following Two questions: Q14. The probability P(X=77)- A) 0.8354 B) 0.9772 Q15. The mode of a random variable X is: C)0 A) 66 D) 0.0228 B) 45 C) 3.125 D) 50 Q16. A sample of size n = 8 drawn from a normally distributed population has sample mean -14.8 and sample standard deviation s=1.92. A 90% confidence interval (CI) for is A) (13.19.16.41) B) (11.14,17.71) C) (13.51,16.09) D) (11.81,15.82) Q17. Based on the following scatter plots, the sample correlation coefficients (r) between y and x is A) Positive B) Negative C) 0 D) 1 Q18. If n = 32,0 = 5.15, = 26.2, a = 0.05, In testing H,:u=25,H₁:25, the rejection region is A) Z> 1.645 B) Z<-1.645 or 2 > 1.645 C) Z> 1.96 D) Z<-1.96 or Z> 1.96 Q19. A numerical summary (value) of a sample is called A) Measurement B) Statistic C) Sample D) Parameter Q20. How many complete dinners can be created from a menu with 3 appetizers, 5 soft drinks, and 2 desserts if a complete dinner consists of one appetizer, one soft drink, and one dessert? A) 12 B) 60 C) 17280 D) 30 *If n=32, x=26.2, o=5.15,a=0.01 :answer the following Two questions Q21. The confidence interval for the population mean is A) (26.08, 26.32) D) (23.86, 28.54) B) (24.42, 27.98) C) (24.42, 27.56) of the estimation "E" is: C) 2.34 D) 0.62 Q22. The maximum error (the margin of error) B) 0.78 A) 1.78 Q23. Let Z be a standard normal variable, find k such that P(-1.5<Z<k)=0.627. C) 0.5067 D) 0.5523 A) 0.3846 B) 0.3223 10 X 4 3 Y 8 6 D) y=10.11-0.7lx *Consider the following table, and answer the following Two questions Q24. Find the linear regression equation y = a + bx B) y=13.11-0.81x C) =10.16-0.67x A) =9.54-0.60x C) -0.9603 Q25. The correlation coefficient (r) between X and Y is: B) 0.8632 A) -0.8987 tonswer: D) -0.9107 6 7 85 am
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Transcribed Image Text:*Assume that the random variable X is normally distributed, with mean - 45 and standard deviation 6-16. Answer the following Two questions: Q14. The probability P(X=77)- A) 0.8354 B) 0.9772 Q15. The mode of a random variable X is: C)0 A) 66 D) 0.0228 B) 45 C) 3.125 D) 50 Q16. A sample of size n = 8 drawn from a normally distributed population has sample mean -14.8 and sample standard deviation s=1.92. A 90% confidence interval (CI) for is A) (13.19.16.41) B) (11.14,17.71) C) (13.51,16.09) D) (11.81,15.82) Q17. Based on the following scatter plots, the sample correlation coefficients (r) between y and x is A) Positive B) Negative C) 0 D) 1 Q18. If n = 32,0 = 5.15, = 26.2, a = 0.05, In testing H,:u=25,H₁:25, the rejection region is A) Z> 1.645 B) Z<-1.645 or 2 > 1.645 C) Z> 1.96 D) Z<-1.96 or Z> 1.96 Q19. A numerical summary (value) of a sample is called A) Measurement B) Statistic C) Sample D) Parameter Q20. How many complete dinners can be created from a menu with 3 appetizers, 5 soft drinks, and 2 desserts if a complete dinner consists of one appetizer, one soft drink, and one dessert? A) 12 B) 60 C) 17280 D) 30 *If n=32, x=26.2, o=5.15,a=0.01 :answer the following Two questions Q21. The confidence interval for the population mean is A) (26.08, 26.32) D) (23.86, 28.54) B) (24.42, 27.98) C) (24.42, 27.56) of the estimation "E" is: C) 2.34 D) 0.62 Q22. The maximum error (the margin of error) B) 0.78 A) 1.78 Q23. Let Z be a standard normal variable, find k such that P(-1.5<Z<k)=0.627. C) 0.5067 D) 0.5523 A) 0.3846 B) 0.3223 10 X 4 3 Y 8 6 D) y=10.11-0.7lx *Consider the following table, and answer the following Two questions Q24. Find the linear regression equation y = a + bx B) y=13.11-0.81x C) =10.16-0.67x A) =9.54-0.60x C) -0.9603 Q25. The correlation coefficient (r) between X and Y is: B) 0.8632 A) -0.8987 tonswer: D) -0.9107 6 7 85 am
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