Are these results statistically significant or not? 2. Paired Sample: A health educator wants to evaluate the effects of a dental film onthe frequency with which children brush their teeth. A random selection of 8children is used for the experiment. First, a baseline of the number of timeschildren brush their teeth over a month's period is established. Next, the childrenare shown the dental film and again the number of teeth brushings are recordedfor a month. The following data were recorded.12345678Subject #After28292530252728Baseline2528 2230 2624 25…2422

Answered: Image /qna-images/answer/947c713c-5535-4b54-8cf0-e09164266c18.jpg

Answered: 2. Paired Sample: A health educator…

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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Similar questions

In an ABA design, the second stage is used to: reduce the chance that fatigue effects will occur manipulate the independent variable measure the effect of the dependent variable establish a baseline
A researcher should reject the null hypothesis if the Pearson's correlation coefficient is 0. a. true b. false
question c i need help with
Question #2 A diet guide claims that you will get 120 calories in a serving of vanilla yogurt. Consumer Reports tested 14 brands of vanilla yogurt and found the following numbers of calories per serving: 160 200 220 230 120 180 140 130 170 190 80 120 100 170 Test the claim that the mean number of calories per serving of vanilla yogurt is 120. Use a significance level of 0.05. Show all the steps of your hypothesis test including The claim being tested: The null and alternative hypothesis: The test statistic
A research company wants to determine whether there is a difference in effectiveness of a brand- name ibuprofen and generic ibuprofen. What are the appropriate hypotheses for this testing scenario? Let µ equal the mean of the effectiveness of brand-name ibuprofen and µ2 equal the mean of the effectiveness of generic ibuprofen. O Ho: H1 - H2 = 0 Hạ: H1 - H2 > 0 O Ho: H1 - µ2 = 0 Hạ: H1 - H2 0 O Ho: X1 - X2 = 0 Hạ: X1 - X2 + 0
4. A community college wants to analyze the age and GPA of its students. Here is the data: Age 18 40 25 38 44 19 51 28 31 24 GPA 2.9 3.3 2.0 3.9 3.7 2.7 3.9 3.5 1.9 2.9 3.4 Can we say that there is a significant relationship between these variables? (Use a = %3D .05) Type of Test: Null Hypothesis: Alternate Hypothesis: SE: Test Statistic: P-value: Decision: Sentence: 21
The results of a recent study regarding smoking and three types of illness are shown in the following table. Illness Non-Smokers Smokers Totals Emphysema 20 50 70 Heart problem 70 80 150 Cancer 40 40 80 Totals 130 170 300 We are interested in determining whether or not illness is independent of smoking. a. b. c. d. The null hypothesis is to be tested at the 5% level. Determine the critical value for this test. What do you conclude in the context of this problem? e. Determine the p-value and perform the test. Make a conclusion in the context of this problem.
10.In a study we reject Ho Which of the following statements are incorrect and why? (a) "Now we know that H, is false." (b) "We have proof that our sample mean represents a particular p." (c) "We have proof that the independent variable causes scores to change as predicted." (d) "It is not pos- sible that the difference between X and u is due to sampling error." (e) "We have evidence that the predicted relationship does
If we reject the null hypothesis, Ho: p= 0, what can we conclude about the population correlation coefficient? Multiple Choice It is zero. It could be zero. It is not zero. It equals the computed sample correlation.
A researcher wants to find the effect of a special diet on systolic blood pressure. A sample of 7 adults was selected to start them on this diet for 3 months. Based on this information, can it be stated that systolic blood pressure changes with the special diet? The test statistic that will determine whether systolic blood pressure changes with the special diet is...... A. 1.23 B. 0.48 C. 18.1 D. 21.08 E. 4.08
If a treatment is expected to increase scores on a variable for which the mean is expected to be µ = 100, what is the null hypothesis? µwith treatment > 100 µwith treatment < 100 µwith treatment > 100 µwith treatment < 100
What does statistically significance indicates?

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