Listed below are the lead concentrations in ug/g measured in different traditional medicines. Use a 0.05 significance level to test the claim that the mean lead concentration for all suchmedicines is less than 13 ug/g. Assume that the lead concentrations in traditional medicines are normally distributed.121112 3.54.51818 3 15 5 0What are the null and alternative hypotheses?Ο Α. H : μ= 13 μα/gΗ: με 13 μg/gO C. Ho μ= 13 μgigΗ: μ> 13 μg/gO B. Ho: µ> 13 µg/gΗ: με 13 μααO D. Ho: u= 13 µg/gΗ : μ# 13 μg/9

State the hypotheses. From the information, given that mean lead concentration for all such…

Answered: Listed below are the lead…

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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Vanadium has recently been recognized as an important trace element. An experiment was conducted to compare the concentrations of vanadium in different foods. The amount of vanadium, measured in nanograms per gram, was recorded for 8 samples of each of the following foods: green beans, tuna, and soy milk. The output from an ANOVA is shown below: State the null and alternative hypotheses to carry out ANOVA with these data. a) H0: Food products and level of vanadium are relatedHa: Food products and vanadium are not related b) H0: Food products and level of vanadium are not relatedHa: Food products and level of vanadium are related c) H0: There is a difference in the mean level of vanadium among the three food productsHa: There is no difference in the mean level of vanadium among the three food products d) H0: There is no difference in the mean level of vanadium among the three food productsHa: There is a difference in the mean level of vanadium among the three food…
Which of the following is the best decision and conclusion based on the result below? H.: p = 0.10 Ha:p + 0.10 Critical Value: +1.645 Computed Test Statistics: z = 5.61 O a. Since the computed test statistics is less than the critical value, do not reject Ho. Therefore, we conclude that at 0.10 level of significance, there is enough evidence that the population proportion is different from 10%. O b. Since the computed test statistics is less than the critical value, do not reject Ho. Therefore, we conclude that at 0.10evel of significance, there is enough evidence that the population proportion is different from 10%. O c. Since the computed test statistics is greater than the critical value, reject Ho. Therefore, we conclude that at 0.10 level of significance, there is enough evidence that the population proportion is different from 10%. O d. Since the computed test statistics is less than the critical value, reject Ho. Therefore, we conclude that at 0.10 level of significance, there…
6. Given a population Mean u=18.2. A sample size n = 36 with x =17.2 and s = 3.5. Test if population µ ±15at a= 0.1 level of significance.
AutoSave Off Ch13 60v13_10e (1) - File Home Insert Draw Page Layout Formulas Data Review View à From Text/CSV là Recent Sources T Queries & Connections là From Web LA Existing Connections Properties Get Refresh Data A From Table/Range All - A Edit Links Get & Transform Data Queries & Connections v X v fx H19 C D F ANOVA table 2 Source SS df MS 3 Regression 4 Residual 5 Total 1870.5782 1 1870.5782 41.39 1265.4934 28 45.1962 3136.0716 29 6. 7 8 Regression output 9 Variables 10 Intercept Coefficients Std. Error t(df=28) 13.76015 3.106 2.914 11 Distance-X 3.77085 7.977 6.427 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
You wish to conduct a hypothesis test to determine if a bivariate data set has a significant correlation among the two variables. That is, you wish to test the claim that there is a correlation (Ha : p ‡ 0). You have a data set with 7 subjects, in which two variables were collected for each subject. You will conduct the test at a significance level of a = 0.05. Find the critical value for this test. rc.v. = ± Report answers accurate to three decimal places.
Use technology and a t-test to test the claim about the population mean u at the given level of significance a using the given sample statistics. Assume the population is normally distributed. Claim: µ> 80; a = 0.10 Sample statistics: x = 82.6, s = 3.3, n 27 What are the null and alternative hypotheses? Choose the correct answer below. ΨΑ H με 80 Β Η με80 Ha: H 80 O C. Ho: H = 80 HA: H 80 O D. Ho: H#80 HA: H= 80 What is the value of the standardized test statistic? The standardized test statistic is (Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer, Check Answer Clear All parts remaining
7. In testing the hypothesis The test statistic is found to be Z = 2.03. Which of the following is the correct p-value? Họ: u = 35 Hạ: u > 35 %3D A. 0.9788 B. 0.0424 C. 0.0212 D. 1.9576 E. None of these
The Board of Transportation and Safety (BTS) wants to examine the safety mechanisms of A, B, and C-class cars. Samples of 10 cars for each class were used. The board members collect the pressure exerted overall on the driver’s body during an impact test. Assume alpha of 0.05. What is dfbetween = ? What is dfwithin = ? What is the critical test statistic: ? A B C 27 21 48 13 23 39 11 10 22 15 27 30 34 34 31 n(A) = 5 n(B) = 5 n(B) = 5 T(A)=100 T(B)=115 T(C)=170 SS(A)=86 SS(B)=135 SS(C)=151 What is the MSbetween=? What is the MSwithin=? What is the calculated test statistic? Given the values of your critical test statistic and calculated test statistic, do you reject the null?
1. A college official wishes to see if the average commuting time (in minutes) is different for students, faculty and staff. Students Faculty Staff 12 57 15 18 43 12 8 25 25 15 40 30 20 25 38 A. Determine the critical value for this test, using αα = 0.05. 3.885 3.490 3.287 Correct answer is not given. B. Determine the test statistic, rounding your answer to 3 decimal places. C. What is the conclusion? Not all the means are equal. All means are equal All means are different. Students have a shorter commuting time.
Given a population Mean u= 18.2. A sample size n = 36 with x =17.2 and s = 3.5. T stif population µ ±15 at a= 0.1 level of significance. 6. 7. Two samples with n = 20, s, =8.2 and n, =15, s, = 7.6. Test if populations o, + 0, at a = 0.05 level of significance. Two samples with p, =.25,n, =36 and p, = .3, n, = 49. Test if populations p, + p, at a = 0.05 level of significance. 9. Two independent samples with x =5.1, s, =1.2, n, = 20 and x, = 4.6, s, =1.5, n, = 20. Test if populations u, > µ, at a = 0.01 level of significance. 10. Two dependent samples with x, =1.6,s =.8,n, =n, = 20 Test if populations u, > u, at a = 0.05 level of significance.
The authors of the paper "Statistical Methods for Assessing Agreement Between Two Methods of Clinical Measurement"† compared two different instruments for measuring a person's ability to breathe out air. (This measurement is helpful in diagnosing various lung disorders.) The two instruments considered were a Wright peak flow meter and a mini-Wright peak flow meter. Seventeen people participated in the study, and for each person air flow was measured once using the Wright meter and once using the mini-Wright meter. Subject Mini-WrightMeter WrightMeter Subject Mini-WrightMeter WrightMeter 1 512 494 10 445 433 2 430 395 11 432 417 3 520 516 12 626 656 4 428 434 13 260 267 5 500 476 14 477 478 6 600 557 15 259 178 7 364 413 16 350 423 8 380 442 17 451 427 9 658 650 (a) Suppose that the Wright meter is considered to provide a better measure of air flow, but the mini-Wright meter is easier to transport and to use. If the two types of meters produce…
Test the claim about the population mean, μ, at the given level of significance using the given sample statistics. Claim: μ≠6000; α=0.08; σ=391. Sample statistics: x=5900, n=49 Question content area bottom Part 1 Identify the null and alternative hypotheses. Choose the correct answer below. A. H0: μ≥6000 Ha: μ≠6000 B. H0: μ≠6000 Ha: μ=6000 C. H0: μ≠6000 Ha: μ≤6000 D. H0: μ=6000 Ha: μ≠6000 E. H0: μ≠6000 Ha: μ≥6000 F. H0: μ≤6000 Ha: μ≠6000

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