You may need to use the appropriate appendix table or technology to answer this question.Given are five observations for two variables, and y. (Round your answers to two decimal places.)* 12 45Y2710 131(a) Use S V(x-)to estimate the standard deviation of p when x3.(x, - )21.12(b) Use t e to develop a 95% confidence interval for the expected value of y when x - 3.to(c) Use spred sy1+to estimate the standard deviation of an individual value of y when x 3.(d) Use a t pred to develop a 95% prediction interval for y when x 3.to

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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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When it comes to shelter cat adoptions animal shelters report that black cats are the hardest to find forever homes for. Given a sample mean (xbar) of 46 and a population standard deviation sigma of 2.0 where n= 30, find the z value and p value. The data indicates that the population mean (mu) for black cat adoption during a given year is 50. Test the claim by black cat rescues that it is less than 50. For this problem us .05 as your alpha.
Q P.15: According to a theater, about 8% of all people who buy a ticket to a performance arrive late. Find the mea and standard deviation of the number of people who are late if 300 tickets have been sold. A The mean is µ 300 · 0. 08 = 24. The standard deviation is o = v300 · 0. 08 · 0. 92 z 4. 70. В The mean is u = V300 · 0. 08 · 0. 92 2 4. 70. The standard deviation is o = 300 · 0. 08 = 24. The mean is µ 300 · 0. 08 · 0. 92 = 22. 08. The standard deviation is o = 300 · 0. 92 = 276. The mean is u = 300 · 0. 92 = 276. The standard deviation is o = 300 · 0. 08 · 0.92 = 22. 08. %3D E The mean is u 300 · 0. 08 = 24. The standard deviation is o = 300 · 0. 08 · 0. 92 = 22. 08. %3D
10.2.22 Question Help The data show the bug chirps per minute at different temperatures. Find the regression equation, letting the first variable be the independent (x) variable. Find the best predicted temperature for a time when a bug is chirping at the rate of 3000 chirps per minute. Use a significance level of 0.05. What is wrong with this predicted value? Chirps in 1 min Temperature (°F) 847 765 990 1018 813 928 73.5 68.6 82.4 81.5 75 78.8 What is the regression equation? ŷ-D•Ox %3D (Round the x-coefficient to four decimal places as needed. Round the constant to two decimal places as needed.)
A random sample of 11 items is drawn from a population whose standard deviation is unknown. The sample mean is x¯x= 920 and the sample standard deviation is s = 25. Use Appendix D to find the values of Student’s t. (a) Construct an interval estimate of μ with 95% confidence. (Round your answers to 3 decimal places.) (b) Construct an interval estimate of μ with 95% confidence, assuming that s = 50. (Round your answers to 3 decimal places.) (c) Construct an interval estimate of μ with 95% confidence, assuming that s = 100. (Round your answers to 3 decimal places.)
How would u sovle this
4. Summary statistics for the data are shown in the table below. Меan Standard Deviation Iland, x 17.682 1.168 Foot, y 23.318 1.230 Pearson correlation r 0.948 (a) Find the slope by using the formula (b) Find the y-intercept by using the formula a = y – br (c) Find the regresssion equation, using the words "IHand" and "Foot," not r and y. (d) Using the regression equation, predict the foot length (in em) for someone who has a hand length of 18 cm.
Part C. To reduce the percentage of defective chips the company...
i was wondering if i could get help with questions a and b
A population of students earned test scores distributed normally with a mean of 65 and a standard deviation of 9. Find the percent of scores with a grade of F. Identify the following variables: μ: σ: x1: x2:z1 = , z2 = The percent of students that earned a grade of F, between 0 and 60, is = % Enter your answers as numbers accurate to 2
(1 point) A random sample of 110 observations produced a mean of x = 34.7 from a population with a normal distribution and a standard deviation o = 4.39. (a) Find a 99% confidence interval for u (b) Find a 95% confidence interval for (c) Find a 90% confidence interval for u
5. Suppose the number of days it takes you to get a flu shot after it is available follows this equation: Y₂ = 30 - 2X₁ where y, is the number of days until you get the flu shot, and X, is the number of people you know who have the flu. Further, suppose on average you know 2.3 people who have the flu, with standard deviation 5. Suppose that the population has size m = 10. (a) Find the average time until you get the flu shot after it is available. (b) Find the standard deviation of time until you get the flu shot after it is available. (c) What is EY;?
Methods 23. The data from exercise 1 follow. X3B 1 2 3 4 5 Yi 3 7 5 11 14 a. Compute the mean square error using equation (14.15). b. Compute the standard error of the estimate using equation (14.16). c. Compute the estimated standard deviation of b, using equation (14.18). d. Use the t test to test the following hypotheses (a = .05): Ho: B, = 0 HiB, #0 e. Use the F test to test the hypotheses in part (d) at a .05 level of significance. Present the results in the analysis of variance table format.

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