Test for differences (a) between ovalbumin-sensitized and nonsensitized outcomes, (b) among thethree different exposures, and (c) interaction. Let a = .05 for all tests. 16. In a study of pulmonary effects on guinea pigs, Lacroix et al. (A-30) exposed 18 ovalbumin-sensitized guinea pigs and 18 nonsensitized guinea pigs to regular air, benzaldehyde, andacetaldehyde. At the end of exposure, the guinea pigs were anesthetized and allergicresponses were assessed in bronchoalveolar lavage (BAL). The following table shows thealveolar cell count (x10°) by treatment group for the ovalbumin-sensitized and nonsensitizedguinea pigs.Ovalbumin-SensitizedTreatmentAlveolar Count ×106noacetaldehydeacetaldehydeacetaldehydeacetaldehydeacetaldehydeacetaldehydeairair49.9050.6050.35nonono44.1036.30nono39.15no24.1524.6022.55nonoairnoair25.1022.6526.8531.10noairnoairbenzaldehydebenzaldehydebenzaldehydebenzaldehydebenzaldehydebenzaldehydeacetaldehydeacetaldehydeacetaldehydeacetaldehydeacetaldehydeacetaldehydenono18.3019.35nono15.4027.10no21.9090.3072.95138.60noyesyesyes80.0569.2531.7040.2063.2059.1079.60yesyesyesairyesairyesуesairairуesair102.4564.6022.1522.7522.15yesairyesyesyesyesyesbenzaldehydebenzaldehydebenzaldehydebenzaldehydebenzaldehydebenzaldehyde37.8519.35yes66.70yesSource: Data provided courtesy of G. Lacroix, Docteur en Toxicologie.

Arrange the data in tabular form: Acetaldehyde Air Benzaldehyde No 49.9 24.15 31.1 No 50.6…

Answered: Test for differences (a) between…

Test for differences (a) between ovalbumin-sensitized and nonser chree different exposures, and (c) interaction. Let a = .05 for alL

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Researchers have shown that cigarette smoking has a deleterious effect on lung function. In their study of the effect of cigarette smoking on the carbon monoxide diffusing capacity (DL) of the lung, Ronald Knudson, W. Kaltenborn and B. Burrows found that current smokers had DL readings significantly lower than either ex-smokers or nonsmokers. The carbon monoxide diffusing capacity for a random sample of current smokers was as follows: 103.768 88.602 73.003 123.086 91.052 92.295 61.675 90.677 84.023 76.014 100.615 88.017 71.210 82.115 89.222 102.754 108.579 73.154 106.755 90.479 Do these data indicate that the mean DL reading for current smokers is lower than 100, the average DL reading for nonsmokers? A. Find the test statistics and interpret the results, a = 0.01? B. Calculate p value and interpret the results. C. Find the confidence interval for a = 0.05.
A study was conducted to determine if lung cancer altered levels of surfactant in the alveoli of the lung. Seven healthy subjects in the study yielded the following data on surfactant levels: 18, 12, 15, 15, 16, 9, 17. Seven lung cancer patients yielded the following results: 16, 8, 7, 15, 11, 12, 9. Do these data indicate a difference in the surfactant level with cancer? Let α = 0.05. Give the p-value.
The authors of a paper classified characters who were depicted smoking in movies released between a certain range of years. The smoking characters were classified according to sex and whether the character type was positive, negative, or neutral. The resulting data are summarized in the accompanying table. Assume that it is reasonable to consider this sample of smoking movie characters as representative of smoking movie characters. Do the data provide evidence an association between sex and character type for movie characters who smoke? Use α = 0.05. Sex = Male Female Positive Negative Neutral 256 Character Type 85 107 11 132 51 Calculate the test statistic. (Round your answer to two decimal places.) x² Use technology to calculate the P-value. (Round your answer to four decimal places.) P-value = What can you conclude? O Reject Ho. There is convincing evidence to conclude that there is an association between sex and character type for movie characters who smoke. Fail to reject Ho.…
In the US, 42.3% of all people have type O blood, 40.8% have type A blood, 12% have type B blood and 4.9% have type AB blood. A researcher wants to see if the distribution of blood type is different for millionaires. The table below shows the results of a random sample of 897 millionaires. What can be concluded at the significant level of a = 0.1. For this study, we should use [x²GOF-Test Your friend Henry helped you with the null and alternative hypotheses... Ho: The distributions of blood types are the same between the general population and the millionaires. H₁: The distributions of blood types are NOT the same between the general population and the millionaires. You drew 897 samples, and the observed frequencies are recorded below. Please complete the table (round answers to at least 4 decimal places). Blood Type 0 A B AB Observed Frequency 375 The degree of freedom = 366 104 52 The test-statistic for this data = The p-value for this sample= Expected Frequency (Please show your…
The data in personalities is bivariate normally distributed Carry out a formal t-test for the association between extroversion and neuroticism in personalities H0: The population correlation coefficient is 0. HA: The population correlation coefficient is not 0. What is the value of the t-statistic corresponding to this test? Carry out a formal t-test for the association between extroversion and neuroticism in personalities. H0: The population correlation coefficient is 0. HA: The population correlation coefficient is not 0. What is the critical value of the t-statistic required to reject the null hypothesis at a confidence level of 0.05
20
Refer to Exercise 8.S.1. Compare the before and after populations using a t test at α = 0.05. Use a nondirectional alternative.