6. The three samples below have been obtained from normal populations withequal variances. Test the hypothesis that the sample means are equal:81210710131412119.14The table value of Fat 5% level of significance for v = 2 and v2 = 12 is 3-88.

To compare the population means of more than 2 groups the ANOVA F single factor test is used. This…

Answered: 6. The three samples below have been…

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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R. 4- For the following data. 1 2 3 4 27 32 29 36 Yt i- Calculate all the coefficients of the sample autocorrelation function and calculate the variance for these estimates. ii- Calculate the first 3 PACF and calculate the variance of these estimates.
A new study has found that, on average, 6- to 12-year-old children are spending less time on household chores today compared to 1981 levels. Suppose two samples representative of the study's results report the following summary statistics for the two periods. 1981 Levels 2008 Levels 24 minutes 19 minutes 51 = 3.5 minutes 52 - 4.3 minutes ni = 30 n2 - 30 Which of the following is the correct value of the test statistic assuming that the unknown population variances are equal? Multiple Cholce Z = -4.94 tss = 4.94 Z = 4.94 t59 = -4.94
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Please answer the question contained in the following picture
Need sub part B answered only
. 3. A researcher is interested in knowing if preterm infants with late metabolic acidosis and preterm infants without the condition differ with respect to urine levels of a certain chemical. The mean levels, standard deviations, and sample sizes from the two samples are given below. Assuming that the populations have equal variances: a. Fill in the missing pieces of the Stata output. ttesti 38 8.5 3.5 32 6.85 2.6 X y Two-sample t test with A variances combined diff Obs Ho: diff=0 38 32 Sample With condition 70 diff mean(x) n 38 Without condition 32 Ha: diff |t|) = F [95% Conf. Intervall 7.349579 5.9126 6.98079 .1552544 t = degrees of freedom = 9.650421 7.7874 8.510638 3.144746 E b. What is the conclusion of your test? c. Use this output to construct a 99% confidence interval for the difference between the two means. 68 Ha: diff0 Pr(Tt) = 0.0155
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6. The three samples below have been obtained from normal populations with equal variances. Test the hypothesis that the sample means are equal: 8. 7 12 10 7 10 13 14 12 11 9. 14 The table value of Fat 5% level of significance for vi = 2 and v2 = 12 is 3-88.