Test C. Directions: Match Column A with Column B, corresponding to the correct formulaor symbol on each item.Column AColumn B1. Population Mean SymbolEx²22. Population Variance formulaa. σ=Nb. μ3. Standard Deviation of UngroupedData formulac. μ. = Σ [X · P(X)]4. Mean of the sampling distributionΣ(x-µ)²d. 0² =of the sample means' formulaN5. Population Mean formulae. μ = Σ×N

Answered: Column A 1. Population Mean Symbol 2.…

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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What is the minimum percentage of data values that will come within 3.5 standard deviations from the mean? а. 84% • b. 92% с. 60% d. 75%
17. How many observations are there?
1. Model 1: OLS, using observations 1-706 Dependent variable: RST Coefficient Std. Error t-ratio p-value const 3586.38 38.9124 92.17 <0.0001 *** TOTWRK −0.150746 0.0167403 −9.005 <0.0001 *** Mean dependent var 3266.356 S.D. dependent var 444.4134 Sum squared resid 1.25e+08 S.E. of regression 421.1357 R-squared 0.103287 Adjusted R-squared 0.102014 F(1, 704) 81.08987 P-value(F) 1.99e-1810538.19 Log-likelihood −5267.096 Akaike criterion 10538.19 Schwarz criterion 10547.31 Hannan-Quinn 10541.71 RSTi =3586.38−0.150746 x TOTWRKi , R2=0.103287,SER=421.1357 (38.9124) (0.0167403) Question? could you please help with this question below. 3) By observing the GRETL output in Part (1) above, provide a detailed explanation of the coefficient of determination. Based on your analysis, is this a good model? Why or why not?
Score: 90/260 • Question 11 Suppose your manager indicates that for a normally distributed data set you are analyzing, your company wants data points between z = -1.6 and z = 1.6 standard deviations of the mean (or within 1,6 standard deviations of the mean). What percent of the data points will fall in that range? Answer: percent (Enter a number between 0 and 100, not 0 and 1 and round to 2 decimal places)
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Range Mean Absolute Deviatio Sample Standar d. Deviatio Sample Variance
Scores on a history test have an average of = 70 with standard deviation of 5. What is the z-score for a student who earned a 65 on the test? What is the coefficient of variation? 2. The annual salaries of employees in a large company are approximately normally distributed with a mean of $70,000 and a standard deviation of $30,000. (6 points) What percent of people earn less than $40,000? What percent of people earn more than $85,000? What percent of people earn between $40,000 and $85,000? 3. Assume women’s heights follow a normal distribution with a mean of u = 64.5 inches and a standard deviation of 2.5 inches. Find the probability that a sample of 14 women have a mean height greater than 65 inches.
5. Bone mineral density (BMD) is a measure of bone strength. It is defined as the ratio of bone mass to the cross- sectional area of the bone that is scanned, and it is expressed in units of grams per square centimeter (g/cm²). Recent studies suggest that peak BMD in women is achieved between ages 15 and 40, and BMD declines after age 45. Decreased BMD is associated with increased risk of bone fracture. In a recent study, the impact of regular physical exercise on women in differing stages of BMD development was examined. A simple random sample of 59 women between the ages of 41 and 45 and with no major health problems were enrolled in the study. The women were classified into one of the two following groups, based on their level of exercise activity. • Sedentary: minimal participation in physical exercise in the past three years (This group contained 31 women.) • Walkers: walk at an aerobic pace at least 135 minutes per week during the past three years (This group contained 28 women.)…
i was wondering if i could get help with questions a and b
Measures of Position and the Empirical Rule 1. Find each z-score. Which score has a better relative position, a score of 44 on a test for which and s = 4, or a score of 283.4 on a test for which and s = 26? %3D 2. State the Empirical Rule 3. Length of pregnancy is normally distributed with m = 269 days and s 15 days. 1. What percentages of pregnancies have lengths that fall between 2 standard deviations of the mean? 2. What are those two lengths? 4. IQ follows a normal distribution with a mean of 100 and a standard deviation of 15. 1. What percentage of people have an IQ between 85 and 115 2. Between 55 and 145?
Please help me with this problem. Thanks!
3.1. Suppose that the height of the women is a normal variable with a mean of 1.62 meters (m) and a standard deviation of 24 centimeters. Calculate the percentage of women who measures (a) more than 1.70 m. (b) between 1.66 and 1.58 m. (c) less than 1.50 m. d) between 1.60 and 1.63 m.

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