In an experiment to study the effect of a particular drug on the number of errors in the maze-learningbehavior of rats, the following MINTAB results were obtained for a 2 sample unequal variance t-test.Two-Sample T-Test and CIMeanStDex SE Mean11.24.13SampleN1218.73.2DrugPlacebo16.10,301.0Difference = mu (1)- mu (2)Estimate for difference:8.37958 lower bound for difference:2.35T-Test of difference = 0 (vs >): T-Value =ZukR-Value = 0.014DF = 13Complete the following:1. Identify the parameters3. Alternative Hypothesis2. Null Hypothesis4. Test Statistic6. Conclusiondf5.p- value =

The random variable X is normally distributed. The given output represents two-independent sample…

In an experiment to study the effect of a particular drug on the number of errors in the maze-learning behavior of rats, the following MINTAB results were obtained for a 2 sample unequal variance t-test. Two-Sample T-Test and CI Sample Drug Placebo Meannsteex SE Mean 3.2 1.0 N 12 18.7 11.2 4.13 Difference = mu (1) - mu (2) Estimate for difference: 8.37 95 lower bound for difference: 2.35 T-Test of difference = 0 (vs >): T-Value = 236R-Value = 0.014 DF = 13 Complete the following: 1. Identify the parameters 3. Alternative Hypothesis 2. Null Hypothesis 4. Test Statistic 6. Conclusion df : ahe 5. p- value =

In an experiment to study the effect of a particular drug on the number of errors in the maze-learning behavior of rats, the following MINTAB results were obtained for a 2 sample unequal variance t-test. Two-Sample T-Test and CI Sample Drug Placebo Meannsteex SE Mean 3.2 1.0 N 12 18.7 11.2 4.13 Difference = mu (1) - mu (2) Estimate for difference: 8.37 95 lower bound for difference: 2.35 T-Test of difference = 0 (vs >): T-Value = 236R-Value = 0.014 DF = 13 Complete the following: 1. Identify the parameters 3. Alternative Hypothesis 2. Null Hypothesis 4. Test Statistic 6. Conclusion df : ahe 5. p- value =

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

The critical cutoff(s) for a two-tailed, paired-samples t test with 21 participants at a p level of 0.05 is (are): Question 4 options: –2.080 and 2.080. –2.086 or 2.086. –1.721 and 1.721. –1.725 or 1.725.
For a certain year, a study reports that the percentage of college students using credit cards was 87%. A college dean of student services feels that this is too high for her university, so she randomly selects 225 students and finds that 190 of them use credit cards. At the .01 significance level, is she correct about her university?
Consider the trash bag problem. Suppose that an independent laboratory has tested trash bags and has found that no 30-gallon bags that are currently on the market have a mean breaking strength of 50 pounds or more. On the basis of these results, the producer of the new, improved trash bag feels sure that its 30-gallon bag will be the strongest such bag on the market if the new trash bag's mean breaking strength can be shown to be at least 50 pounds. The mean of the sample of 39 trash bag breaking strengths in Table 1.10 is x = 50.573. If we let u denote the mean of the breaking strengths of all possible trash bags of the new type and assume that o equals 1.61: Using the 95 percent confidence interval, can we be 95 percent confident that u is at least 50 pounds?
Test the claim that the proportion of men who own cats is significantly different than 70% at the 0.1 significance level.The null and alternative hypothesis would be: a.) H0:p=0.7H0:p=0.7H1:p≠0.7H1:p≠0.7 b.)H0:μ=0.7H0:μ=0.7H1:μ>0.7H1:μ>0.7 C.) H0:μ=0.7H0:μ=0.7H1:μ<0.7H1:μ<0.7 D.) H0:μ=0.7H0:μ=0.7H1:μ≠0.7H1:μ≠0.7 E.) H0:p=0.7H0:p=0.7H1:p>0.7H1:p>0.7 F.) H0:p=0.7H0:p=0.7H1:p<0.7H1:p<0.7 The test is: A.)two-tailed B.)right-tailed C.)left-tailed Based on a sample of 30 people, 61% owned catsThe test statistic is: (to 2 decimals) = The positive critical value is: (to 2 decimals)=Based on this we: a.)Fail to reject the null hypothesis B.)Reject the null hypothesis
A study of the number of business lunches that executives in the insurance and banking industries claim as deductible expenses per month was based on random samples and yielded the following results: n1 = 40 ¯x1 = 9.1 s1 = 1.9 n2 = 50 ¯x2 = 8.0 s2 = 2.1. Test the hypothesis that there is no difference between the averages at 5% significance level.
Test the claim that the proportion of people who own cats is significantly different than 80% at the 0.1 significance level.The null and alternative hypothesis would be: H0:μ=0.8H0:μ=0.8H1:μ≠0.8H1:μ≠0.8 H0:p=0.8H0:p=0.8H1:p≠0.8H1:p≠0.8 H0:p≤0.8H0:p≤0.8H1:p>0.8H1:p>0.8 H0:p≥0.8H0:p≥0.8H1:p<0.8H1:p<0.8 H0:μ≤0.8H0:μ≤0.8H1:μ>0.8H1:μ>0.8 H0:μ≥0.8H0:μ≥0.8H1:μ<0.8H1:μ<0.8 The test is: right-tailed left-tailed two-tailed Based on a sample of 200 people, 87% owned catsThe p-value is: (to 2 decimals)Based on this we: Reject the null hypothesis Fail to reject the null hypothesis
The coach of a very popular men’s basketball team claims that the average distance the fans travel to the campus to watch a game is 35 miles. The team members feel otherwise. A sample of 16 fans who travel to games was randomly selected and yielded a mean of M= 36 miles and s= 5 miles. Test the coach’s claim at the 5% (.05) level of significance. one-tailed or two-tailed test: State the hypotheses: df= tα or t value for the critical region = sM = t (test statistic)= Decision:
When three groups were compared using the one-way Analysis of Variance (ANOVA), the result turned out to be significant, that is, the null hypothesis was rejected. What will be the appropriate interpretation of this result?A. All three groups significantly differ in means.B. Exactly two of the three groups significantly differ.C. At least two of the three groups significantly differ in means.D. All three groups have the same effect on the dependent variable.
A poll was conducted to investigate opinions about global warming. The respondents who answered yes when asked if there is solid evidence that the earth is getting warmer were then asked to select a cause of global warming. The results are given in the accompanying data table. Use a 0.01 significance level to test the claim that the sex of the respondent is independent of the choice for the cause of global warming. Do men and women appear to agree, or is there a substantial difference? identify the null and alternative hypothesis What is the test statistic? What is the p-value? What is the critical value? Human activity Natural patterns Don't know Male 343 150 28 Female 356 173 30 Chi-Square Degrees of Freedom 0.995 0.99 0.975 0.95 0.90 0.10 0.05 0.025 0.01 0.005 1 - - 0.001 0.004 0.016 2.706 3.841 5.024 6.635 7.879 2 0.010 0.020 0.051 0.103…
A graduate student believes that people consider faces with more contrast between lip color and skin tone as more feminine. She identifies the null hypothesis as: Ho: The level of contrast between lip color and skin tone does not affect how feminine a face is considered. She chooses a significance level of 0.05. After she collects the data and computes the sample statistics, it is time for her to make a decision about the null hypothesis. What are the two possible decisions that the graduate student can make? Check all that apply. There is not enough evidence to reject the hypothesis that the contrast between lip color and skin tone affects how feminine a face is considered. There is enough evidence to reject the hypothesis that the contrast between lip color and skin tone does not affect how feminine a face is considered. There is enough evidence to reject the hypothesis that the contrast between lip color and skin tone affects how feminine a face is considered. ☐ There is not enough…
The critical cutoff(s) for a one-tailed, paired-samples t test with 16 participants at a p level of 0.05 is(are) ___. -2.132 and 2.132 -1.753 or 1.753 -1.746 or 1.746 -2.120 and 2.120
A psychologist wanted to study the effect of television violence on cortisol levels in the blood (high scores indicate high levels). The psychologist measured cortisol levels in seven participants before and after the participants watched a violent show. Participants' cortisol level scores are listed below. The researcher is interested if there is a change in the cortisol levels after watching the violent show. Carry out a t test for dependent means (using the .01 significance level). What should the researcher conclude? a.) Use the five steps of hypothesis testing. Label all the steps clearly. Show ALL work/calculations. b.) Report the statistic in APA format (the statistical sentence). Cortisol Levels in Blood Before and After Watching Violent Show Participant Before After A 3 3 B 15 3 9 6 D 6 8 E 8 F 4 1 Type here to search E I O KO 112 prt sc & * 6 E R T S G K V. alt alt 目 B.