Two teaching methods and their effects on science test scores are being reviewed. A random sample of 6 students, taught in traditional lab sessions, had a mean test score of 78.8 with a standard deviation of 4.6. A random sample of 12 students, taught using interactive simulation software, had a mean test score of 87.8 with a standard deviation of 5.9. Do these results support the claim that the mean science test score is lower for students taught in traditional lab sessions than it is for students taught using interactive simulation software? Let uj be the mean test score for the students taught in traditional lab sessions and uz be the mean test score for students taught using interactive simulation software. Use a significance level of a = 0.05 for the test. Assume that the population variances are equal and that the two populations are normally distributed. Step 3 of 4: Determine the decision rule for rejecting the null hypothesis Ho. Round your answer to three decimal places. Answer 囲 Tables в Кеурad Keyboard Shortcuts Previous Step Answers Reject Ho if

Two teaching methods and their effects on science test scores are being reviewed. A random sample of 6 students, taught in traditional lab sessions, had a mean test score of 78.8 with a standard deviation of 4.6. A random sample of 12 students, taught using interactive simulation software, had a mean test score of 87.8 with a standard deviation of 5.9. Do these results support the claim that the mean science test score is lower for students taught in traditional lab sessions than it is for students taught using interactive simulation software? Let uj be the mean test score for the students taught in traditional lab sessions and uz be the mean test score for students taught using interactive simulation software. Use a significance level of a = 0.05 for the test. Assume that the population variances are equal and that the two populations are normally distributed. Step 3 of 4: Determine the decision rule for rejecting the null hypothesis Ho. Round your answer to three decimal places. Answer 囲 Tables в Кеурad Keyboard Shortcuts Previous Step Answers Reject Ho if

Name: 2/12Question 1 of 3, Step 3 of 4CorrectTwo teaching methods and their
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: 2/12Question 1 of 3, Step 3 of 4CorrectTwo teaching methods and their effects on science test scores are being reviewed. A random sample of 6 students, taught in traditional lab sessions, had a mean testscore of 78.8 with a standard deviation of 4.6

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 investigate how the presence of cell phones influence the quality of human interaction. Subjects are randomly selected from a population and divided into an experimental group that is asked to leave their phones in the front of the room and a control group that are not asked to leave their cell phones at the front of the room. Subjects are left alone for 10 minutes and then asked to take a survey designed to measure quality of interactions they had with others in the experiment. What statistical test is appropriate?
Medical researchers are interested in determining the relative effectiveness of two drug treatments on patients with a chronic mental illness. Treatment 1 has been around for many years, while treatment 2 has recently been developed based on the latest research. The researchers chose two independent test groups. The first group had 9 patients, all of whom received treatment and had a mean time until remission of 166 days, with a standard deviation of 8 days. The second group had 15 patients, all of whom received treatment 2 and had a mean time until remission of 161 days, with a standard deviation of 9 days. Assume that the populations of times until remission for each of the two treatments are normally distributed with equal variance. Can we conclude, at the 0.05 level of significance, that u, the mean number of days until remission after treatment 1, is greater than u,, the mean number of days until remission after treatment 2? Perform a one-tailed test. Then complete the parts…
Two teaching methods and their effects on science test scores are being reviewed. A random sample of 1313 students, taught in traditional lab sessions, had a mean test score of 78.478.4 with a standard deviation of 5.85.8. A random sample of 1717 students, taught using interactive simulation software, had a mean test score of 85.385.3 with a standard deviation of 4.14.1. Do these results support the claim that the mean science test score is lower for students taught in traditional lab sessions than it is for students taught using interactive simulation software? Let μ1�1 be the mean test score for the students taught in traditional lab sessions and μ2�2 be the mean test score for students taught using interactive simulation software. Use a significance level of α=0.01�=0.01 for the test. Assume that the population variances are equal and that the two populations are normally distributed. Step 3 of 4 : Determine the decision rule for rejecting the null hypothesis H0�0. Round your…
Would a descriptive, correlational, independet and dependent variable, quasi-experimental or experiemental, quantitative research design be best for a research question regarding social skills training versus pharmacological treatment?
A large company that produces allergy medications claims that Americans lose an average of 40 hours of work to problems related to seasonal allergies. A consumer advocacy group believes that company's claim exhibits self-interest bias. In other words, the advocacy group believes that the actual mean number of missed hours is less than claimed. The advocacy group would like to obtain statistical evidence about this issue and takes a random sample of 100 American workers. They find that these 100 people lost and average of 38 hours due to seasonal allergy symptoms. The standard deviation is 9.5 hours. (c) Based on your selection from part (b), what is the value of the standardized test statistic for this significance test? (d) Based on your selection from part (b), what is the P-value for this significance test? (e) What is the correct decision for this test, using a 0.05 level of signifcance? A) Reject the null hypothesis B) Do not reject the null…
Two teaching methods and their effects on science test scores are being reviewed. A random sample of 2020 students, taught in traditional lab sessions, had a mean test score of 72.772.7 with a standard deviation of 3.13.1. A random sample of 1212 students, taught using interactive simulation software, had a mean test score of 76.976.9 with a standard deviation of 5.55.5. Do these results support the claim that the mean science test score is lower for students taught in traditional lab sessions than it is for students taught using interactive simulation software? Let μ1�1 be the mean test score for the students taught in traditional lab sessions and μ2�2 be the mean test score for students taught using interactive simulation software. Use a significance level of α=0.05�=0.05 for the test. Assume that the population variances are equal and that the two populations are normally distributed. Step 2 of 4 : Compute the value of the t test statistic. Round your answer to three decimal…
Two teaching methods and their effects on science test scores are being reviewed. A random sample of 11 students, taught in traditional lab sessions, had a mean test score of 76.7 with a standard deviation of 3.2. A random sample of 16 students, taught using interactive simulation software, had a means test score of 83.2 with a standard deviation of 6.4. Do these results support the claim that the mean science test score is lower for students taught in traditional lab sessions than it is for students taught using interactive simulation software? Use a significance level of = 0.1 for the test. (Assume that the population variances are not equal, i.e. set “pooled” to “no.”) What are the null and alternative hypothesis?
The article “Well-Fed Crickets Bowl Maidens Over” (Nature Science Update, February 11, 1999) reported that female field crickets are attracted to males with high chirp rates and hypothesized that chirp rate is related to nutritional status. The usual chirp rate for male field crickets was reported to vary around a mean of 60 chirps per second. To investigate whether the chirp rate was related to nutritional status, investigators fed 22 male crickets a high protein diet for 8 days, after which chirp rate was measured. Let: The parameter μμ be the mean chirp rateof male crickets on a high protein diet for 8 days. Given: The mean chirp rate for the random sample of crickets on the high protein diet was reported to be 65.32 chirps per second with a standard deviation of 12. Research Question: Is there convincing evidence that the mean chirp rate for crickets on a high protein diet implies an advantage in attracting the ladies? It is known that the researchers did not want to…
A researcher is studying psychological factors in artistic achievement among teenage girls. One variable he is particularly interested in is perseverance. What information does a measure of variability for the variable perseverance convey? Check all that apply. What is the central tendency for the variable perseverance among teenage girls? What is the most common value for the variable perseverance among teenage girls? How spread out are the values for perseverance amoung teenage girls? Do all teenage girls have the same amount of perseverance?
The same media consultants decided to continue their investigation of the focal relationship between income and TV viewing habits. In order to confirm the existence of the focal relationship, they decided to control for immigration status by adding a variable measuring the number of each survey respondent's grandparents who were born outside the U.S. The researchers wonder if immigration background could influence both income and TV watching (but they hope this is not true, because it could invalidate the focal relationship). The researchers conduct a multivariate regression by adding a measure of number of grandparents born outside the U.S. to the regression equation presented in Equation 2 of Table 1. The results of the second regression equation are presented in Equation 2 of Table 1. Table 1. OLS Regression Coefficients Representing Influence of Income and Control Variables on Number of Hours of TV Watched per Day Equation 1 Equation 2 Equation 3 Annual Income…
Two teaching methods and their effects on science test scores are being reviewed. A random sample of 18 students, taught in traditional lab sessions, had a mean test score of 75.1 with a standard deviation of 5.4. A random sample of 12 students, taught using interactive simulation software, had a mean test score of 81.6 with a standard deviation of 4.2. Do these results support the claim that the mean science test score is lower for students taught in traditional lab sessions than it is for students taught using interactive simulation software? Let μ₁ be the mean test score for the students taught in traditional lab sessions and μ₂ be the mean test score for students taught using interactive simulation software. Use a significance level of α = 0.05 for the test. Assume that the population variances are equal and that the a two populations are normally distributed. Step 3 of 4: Determine the decision rule for rejecting the null hypothesis Ho. Round your answer to three decimal places.
UW Economics Department decided to review two current teaching methods and their effects on the microeconomics test scores. A random sample of 16 students, taught in a traditional classroom face- to-face setting, had a mean test score of 77.5 with a standard deviation of 5.7. A random sample of 11 students, taught using interactive online software, had a mean test score of 85.9 with a standard deviation of 6. Do these results support the claim that the mean microeconomics test Score is lower for students taught in traditional classroom setting than it is for students taught using interactive online software? Let µ1 be the mean test score for the students taught in traditional classroom setting and µ2 be the mean test score for students taught using interactive online software. Using a 5% significance level test. From previous work on this subject the Economics Department knows that the population variances are equal and that the two populations are normally distributed. a. State the…