20. The following data summarize the results from anindependent-measures study comparing three treat-ment conditions.M = 2M = 3M = 4n = 10n = 10n = 10T = 30T = 20T = 40s2 = 2.67s2 = 1.33s? = 2.00a. Use an ANOVA with a = .05 to determinewhether there are any significant differencesamong the three treatment means. Note: Becausethe samples are all the same size, MSaverage of the three sample variances.b. Calculate n? to measure the effect size for thisstudy.is thewithin 18. The following data were obtained from an inde-pendent-measures study comparing three treatmentconditions.TreatmentIIII38.N = 12G = 48EX = 23836.46.M = 4M = 2M = 6T = 8T = 24T = 16SS = 2SS = 8SS = 421a. Calculate the sample variance for each of the threesamples.b. Use an ANOVA with a = .05 to determinewhether there are any significant differencesamong the three treatment means.

a)The null and alternative hypotheses are shown below:

Answered: 20. The following data summarize the…

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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The data below are from an independent-measures experiment comparing three different treatment conditions. Use an analysis of variance with α = .05 to determine whether these data indicate any significant differences among the treatments. Treatment1 Treatment2 Treatment3 0 1 4 0 4 3 0 1 6 2 0 3 M1=0.5 M2=1.5 M3=4 SS1=3 SS2=? SS3=6
8. Test the claim that the standard deviation of the systolic blood pressure of adults aged 40-50 is equal to 22mmHg. The sample statistics are as follows: n=23, x¯ = 132.3mmHg, and s = 26.7. Use a significance level of 0.05. Assume the sample was randomly collected from a normally distributed population. Show work.
50. Which of the following involves dependent samples: a. Testing the difference in life expectancy between left- and right-handed people b. Evaluating the growth of grizzly bears by weighing each bear at both 1 and 2 years of age C. Assessing the difference in age of automobiles driven by faculty and students d. Determining the effectiveness of a drug by examining the difference in successful responses between a treatment (got the drug) group and a control (got a placebo) group of patients
The following data were obtained from an independent-measures study comparing three treatment conditions. Calculate the sample variance for each of the three samples. Use an ANOVA with α=.05 to determine whether there are any significant differences among the three treatment means.
treatment conditions. a. Treatment 1 0 0 0 3 0 0 T=3 SS = 7.5 Treatment 2 2 3 1 3 2 1 T = 12 SS=4 Treatment 3 4 2 4 3 4 4 G=36 SStotal = 42 T = 21 SS = 3.5 Use an analysis of variance with a = .05 to determine whether these data indicate any significant mean differences among the treatments. Please organize all of your work on a source table E C
17.
1. Develop 3 sigma level process control charts for monitoring weight of boxes that contain apples. You performed samplings over 5 weeks with sample size of 4 (n = 4). Draw variable control charts (mean and range). Calculate and show values for UCL, CL, and LCL using the factors provided in below table. Discuss your graphs and make your conclusion. Week1 Week2 Week3 Week4 Week5 week # of complaint Week complaints 1 1 1 7 2 2 2 6 20 21 21 24 30 3 Sample Size 8 n 2 3 4 5 10 15 20 25 3 3 21 20 23 21 20 4 7 A2 Control Limit Factor for Sample Mean 1.880 1.023 0.729 0.577 0.308 0.223 0.180 0.153 4 4 20 22 23 27 24 Factors for 3 Sigma level 5 2 D3 0 0 0 0 2. The number of monthly customer complaint at a hotel is monitored. Develop three sigma level control chart using the data below. Calculate and show values for UCL, CL, and LCL. Draw the control chart. Is everything under control? Discuss your conclusion. You will have to choose the proper control chart. 0.223 0.348 0.414 0.459 5 5 19 21 25…
6) The following data summarize the results from an independent-measures study comparing three treatment conditions. Treatment II 3. 6. N= 12 10 G = 60 1 10 EX = 392 1 5. 6. M = 3 M = 4 M= 8 T= 12 T= 16 T= 32 SS = 8 SS = 12 SS = 16 a) Use an ANOVA with a = .05 to determine whether there are any significant differences among the three treatment means. b) Calculate n² to measure the effect size for this study. c) Write a sentence demonstrating how a research report would present the results of the hypothesis test and the measure of effect size. 3.
. 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
Q.3 For the following data: a) Compute SST, SSTR, SSE b) Construct a one-way ANOVA table c) Decide at the 5% significance level, whether the data provide sufficient evidence to conclude that the means of the populations from which the samples are drawn are not the same. Sample 1 Sample 2 Sample 3 Sample 4 11 16 6 2 10 7 4 10 3. we have: ng = 3 n3= 3 n4 = 3 Ta 24 = 1s Ty= 36 THa9 n z Enj = 12 Exz= IT;= &4 ..... Ex - (Ex:*/n = SSTR = I (Tim;) - (Iri)/n = ()+( )+( )+( ) -- 2. SST = 12 SSE = 5sT - SSTR = Fostatistic df MS 2 df :عاطء Souree SS MSTR/MSE 138 Treatment where: MSE- SSE/(n-k) MSTR = SSTR/(K-1) Enron Tofal df z ( 3, 8) caitical Valme s ? Compare test- statistic to cv. Do you rejuctNull or Do not rejrit what dees it mean ? write here
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