An indigenous plant is used by natives to help those with anxiety. It is believed by natives to immediately reduce anxiety A study was conducted to test the actual effects of this plant. Participants were given different amounts of the plant extra after being placed in a high anxiety situation. Anxiety scores were then measured. The higher the score, the more anxiety the participants were experiencing. Due to the lack of research surrounding this plant, researchers did not have formal hypotheses. Therefore, compare all 3 groups if the null hypothesis is rejected. Use alpha = .05. Control 1 ounce 2 ounces - X = 19 X2= 17 X3 = 13 %3D SSi= 234 SS3 = 206 SS3 = 328 %3D %3D n = 30 n2 = 30 ng = 30 SSTotal = 1088 %3D A. State the hypotheses. B. Make a decision about the null. C. State your conclusion D. Relate your conclusion to the research. E. If allowed, conduct analytical comparisons for every comparison. Use alpha = .05 %3D a State the hypotheses. b. Make a decision about the null c. State your conclusion. d. Relate your conclusion to the research

An indigenous plant is used by natives to help those with anxiety. It is believed by natives to immediately reduce anxiety A study was conducted to test the actual effects of this plant. Participants were given different amounts of the plant extra after being placed in a high anxiety situation. Anxiety scores were then measured. The higher the score, the more anxiety the participants were experiencing. Due to the lack of research surrounding this plant, researchers did not have formal hypotheses. Therefore, compare all 3 groups if the null hypothesis is rejected. Use alpha = .05. Control 1 ounce 2 ounces - X = 19 X2= 17 X3 = 13 %3D SSi= 234 SS3 = 206 SS3 = 328 %3D %3D n = 30 n2 = 30 ng = 30 SSTotal = 1088 %3D A. State the hypotheses. B. Make a decision about the null. C. State your conclusion D. Relate your conclusion to the research. E. If allowed, conduct analytical comparisons for every comparison. Use alpha = .05 %3D a State the hypotheses. b. Make a decision about the null c. State your conclusion. d. Relate your conclusion to the research

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section: Chapter Questions

Problem 13PT

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What is an experiment?
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In a survey conducted by Wright State University, senior high school students were asked if they had ever used marijuana. Of the 1120 females surveyed, 445 responded yes. Of the 1156 males surveyed, 515 responded yes. The researchers who conducted a survey were interested in knowing if there is a difference between genders in regards to having tried marijuana. 1. Is this an observational study or an experiment? Explain how you know, 2. Identify the explanatory and response variables, and classify them as categorical or quantitative. 3. Do you think random sampling was employed in this scenario? Explain your reasoning 4. Do you think random assignment was employed in this scenario? Explain your reasoning. 5. Write the hypotheses in symbols for this scenario. 6. Produce a 2x2 table of counts, with the explanatory variable in columns 7. Calculate the proportion of subjects who have tried marijuana based on gender.
Consumer Reports tested different point-and-shoot digital cameras. Based upon factors such as the number of megapixels, weight (), image quality, and ease of use, they developed an overall score for each camera tested. The overall score ranges from, with higher scores indicating better overall test results. Selecting a camera with many options can be a difficult process, and the price is certainly a key issue for most consumers. By spending more, will a consumer really get a superior camera? And, do cameras that have more megapixels, a factor often considered to be a good measure of picture quality, cost more than cameras with fewer megapixels? Table 14.13 shows the brand, average retail price (), number of megapixels, weight (), and the overall score for Canon and Nikon subcompact cameras tested by Consumer Reports (Consumer Reports website, February 7, 2012). Table 14.13Data for Point-and-Shoot Digital Cameras Q:- Analyze the data using only the observations for the Canon cameras.…