What is sigma equal to? The image shows a bell-shaped curve, representing a normal distribution. The curve is centered at µ=3, which is the mean of the distribution. The shaded area under the curve, which constitutes 99.7% of the total area, represents the data within three standard deviations from the mean. This follows the empirical rule, commonly known as the 68-95-99.7 rule, which states that approximately 99.7% of data in a normal distribution falls within three standard deviations of the mean.Key features of the graph:- The horizontal axis is labeled with numbers 0 and 6, with the mean µ=3 marked at the center.- The vertical axis measures the frequency of data points, highest at the mean.- The shaded area indicates the portion of data within three standard deviations from the mean.

Answered: What is sigma equal to?

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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Answer.
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Sean also took the SAT (μ=1010,σ=200) and had a z score of +0.25. What was his SAT raw score? What was his percentile?
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What is P(C and Z)?
Q1. A study was conducted to investigate the relationship between premature birth and mental development at 12 months. The infant's birth weight was used as an index of prematurity. At age 12 months, the child's mental development was recorded. The results are shown below (the weights are in pounds): Birth 4 6 7 8 Weight(x) Developmental 85 Quotients(y) 88 87 94 96 Summary: n = 5, £x=30, £x² = 190, Ey= 450, Ey² = 40590, Exy = 2728 . a. Find the least square prediction equation, y on x. b. Obtain a 95% confidence interval for the average value of y when x 6.5 (i.e., a C.I. for E(y|x= 6.5)). c. Obtain the coefficient of correlation (r) and interpret the result. d. Test the hypothesis that H, :p= 0 vs. H, : p0. Use a =0.05.
H.: µ = 47.6 and H, : µ < 47.6 where u = the mean age of teachers at Ravenwood High School. The calculated p-value is 0.023. What conclusion will you make at a = 0.10? O Reject the H. O Fail to reject the H. O Reject the H. O Fail to reject the Ha
Is the average time to complete an obstacle course longer when a patch is placed over the right eye than when a patch is placed over the left eye? Thirteen randomly selected volunteers first completed an obstacle course with a patch over one eye and then completed an equally difficult obstacle course with a patch over the other eye. The completion times are shown below. "Left" means the patch was placed over the left eye and "Right" means the patch was placed over the right eye. Time to Complete the Course Right 46 48 42 50 46 43 50 41 Left 45 46 42 50 46 39 50 37 Assume a Normal distribution. What can be concluded at the the a = 0.05 level of significance level of significance?
A tank is discharging water through an orifice at a depth x (m) below the surface of water whose area A (m²). The following are the values of the (corresponding values of (A) w.r.t (x 1.5 1.8 1.95 2.10 2.25 2.4 2.55 2.7 2.85 x (m) 1.65 A (m) 1.25 1.39 1.52 1.65 1.81 1.96 2.12 2.65 2.83 2.29 2.46 :Using the following formula 3.0 A dx T = 1.5 Calculate (T) for the level of water to drop from 1.5 m to 3 m by .Simpson's 1/3 rule 3.
Úse diFferentiais to approximato VTG.a (use FQ)= FVx) %3D
In the model in the table below, how is "1.3" interpreted? Model R2 Standard error y 5 + 1.3x 0.68 2.56 A) 130% of the variation in y is accounted for by x. B) On the average, the deViation of the estimated value from the actual value is 1.3. C) Whenever the value of x is 0, the value of y is 1.3. D) For every unit of change in x, there is a corresponding change in y by 1.3.

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