24. Urinary concentrations of lead in 13 children were: 2.6, 0.1, 1.1, 0.4, 0.8,1.3, 1.2, 1.5, 3.2, 1.7, 1.9, 1.9, and 2.2. The value of dispersion isOa) SD-0.8, variance 0.5Ob) SD-0.5, variance 0.7Oc) SD=0.8, variance = 0.6401d) SD=0.6401, variance 0.8

Let us denote the values as X. X x-x¯2 2.6 1.143189 0.1 2.047189 1.1 0.185589 0.4…

Answered: 24. Urinary concentrations of lead in…

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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3) Two hundred hypertensive patients are assigned to a diet program. Blood pressure is measured on each patient both before the program starts and 3 months after the start of the program. The correct statistical procedure to determine whether or not the mean blood pressure change (after-before) changed significantly different in the patients is: a. Paired t-test b. 2 sample unpaired t-test c. Fisher's exact test (an exact version of the chi-squared test for 2x2 contingency tables) d. None of the above
e) Estimate the following statistical measures 1. Mean2. Median 3. Mode
16. A one-way ANOVA test is conducted at the 10% level of significance and finds the following results: n = 34, K = 4, x̅ = 16.62, MST = 30.303, and MSE = 12.356. What is the tail area of the ANOVA test? A. 0.083 D. 0.097 B. 0.178 C. 0.071
In an analysis of variance with 4 groups, each containing 12 respondents. Please calculate the between-group degrees of freedom.
8.What is the sample variance and the estimated standard error for a sample of n = 9 scores with SS = 72? a. s2= 9 and sM = 3 c. s²= 3 and sM = 3 b. s? = 9 and SM = 1 d. s2 = 3 and sM= 1 %3D
8. Childhood participation in sports, cultural groups, and youth groups appears to be related to improved self-esteem for adolescents (McGee, Williams, Howden-Chapman, Martin, & Kawachi, 2006). In a representative study, a sample of n 100 adolescents with a history of group participation is given a stan- dardized self-esteem questionnaire. For the general population of adolescents, scores on this questionnaire form a normal distribution with a mean of p. = 50 and a standard deviation of o = 15. The sample of group- participation adolescents had an average of M = 53.8. a. Does this sample provide enough evidence to con- clude that self-esteem scores for these adolescents %3D %3D are significantly different from those of the general population? Use a two-tailed test with a = b. Compute Cohen's d to measure the size of the difference. .05. c. Write a sentence describing the outcome of the hypothesis test and the measure of effect size as it would appear in a research report.
1. Interpret the data which has been presented in thr below Table 1 and Table 2.
1. One sample from an independent‐measures study has n = 6 with SS = 400. The other sample has n = 9 and SS = 770. Compute the pooled variance/explanation.
Group 1. Mean= 24.08 Group 2. Mean= 26.5 STD Dev= 4.42 STD Dev= 5.2 Sample Size=16 Sample Size=16 What is tcomputed =
Pavan.88.9
20. Consider the following data: 40, 45, 55, 65. ?, ?, 75, 75, 78, 83 Then use the suitable measure to calculate the average and dispersion for the given data.

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24. Urinary concentrations of lead in 13 children were: 2.6, 0.1, 1.1, 0.4, 0.8 1.3, 1.2, 1.5, 3.2, 1.7, 1.9, 1.9, and 2.2. The value of dispersion is Oa) SD-0.8, variance 0.5