The diagram shows the results of four different experiments using a dartboard. Which one is an example of both precision and accuracy? Experiment I Experiment II Experiment III Experiment IV
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QUESTION 15
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The diagram shows the results of four different experiments using a dartboard. Which one is an example of both precision and accuracy?
Experiment I
Experiment II
Experiment III
Experiment IV
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- QUESTION 5 Public relation companies conducted two surveys about deodorants. The first survey asked a random sample of 500 men about their use of a natural deodorant. A second survey asked the same questions to a random sample of 550 women. In these two studies, 68% of men and 44% of women stated they were dissatisfied with the effectiveness of natural deodorants. Use these results to answer the following questions about the proportion of men and women's satisfaction with natural deoderants. (Round to the nearest whole person as needed). What is the difference between the proportion of men and women? (write as a decimal) The standard error for these two samples is (round to the nearest hundredth) Using a 99% confidence level, the lower limit is and the upper limit is QUESTION 6 Save All Answe Click Save and Submit to save and submit. Click Save All Answers to save all answers. ILOIIOOCI V O UDDU Y D IIINO VIIIS UING DIUvUlU DINU W uvup Hotgut auvut youISUII UNu yu @四田07A CC DIC. étv 12…R %24 FE %#3 %24 Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires caused by humans in the west? 374 of the 522 randomly selected wildfires looked at in the south were caused by humans while 390 of the 563 randomly selected wildfires looked at the west were caused by humans. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: :0H H1: Select an answer Select an answer Select an answer (please enter a decimal) Select an answer Select an answer Select an answer (Please enter a decimal) c. The test statistic ? O (please show your answer to 3 decimal places.) d. The p-value (Please show your answer to 4 decimal places.) e. The p-value is ? e a f. Based on this, we should elect an answer the null hypothesis. g. Thus, the final conclusion is that O The results are statistically insignificant at a = 0.01, so there is statistically…sub parts 1-3
- Question 9 Dr. Jameson wanted to know if IQ scores differed between male and female participants in his study. He gave 28 participants an IQ test and then compared IQ scores for gender differences. He hypothesized that there would be a statistically significant gender difference in IQ scores. Contrary to Dr. Jameson's hypothesis, there were no differences in IQ scores between men and women in his study. From the results of the study, Dr. Jameson must the research hypothesis. the null hypothesis and fail to reject; reject reject; retest reject; fail to reject retest; rejectThese two questions please.Question 4 Forys and Dahlquist (2007) investigated the effects of coping style and cognitive strategy on dealing with pain. Participants were first classified as having a monitoring or avoiding coping style. Participants were then randomly assigned to one of two cognitive strategy conditions, distraction or sensation monitoring. Participants were next instructed to use the cognitive strategy while submerging their hand in ice water. The researchers measured pain tolerance as the number of seconds participants were able to keep their hand in the ice water. How would you label the ANOVA used to analyze this data? 4 x 2 within-groups ANOVA O 2x 2 between-groups ANOVA 2 x 2 within-groups ANOVA 4 x 2 between-groups ANOVA
- Homework #13: Factorial BS ANOVA Part A. An experiment is conducted to investigate the hallucinatory effect of opium and marijuana smoking. The researcher examined two types of drugs; opium and marijuana. Participants either smoked a drug or did not smoke a drug. This resulted in a 2 (Opium: smoked, did not smoke) x 2 (Marijuana: smoked, did not smoke) between-subjects design, with 7 subjects in each condition. Amount of hallucinatory activity was measured such that a high number indicated considerable hallucination. Draw a contingency table for this design, using the conventions discussed in class. Use the A and B notation and specify which factor is A and which factor is B. Also include the Means and SDs of each of the four cells within the contingency table. A: Opium B: Marijuana Smoked opium & Smoked MJ M = SD = Did not smoke Opium & Smoked MJ M = SD = Smoked opium & did not smoke MJ M = SD = Did not…Question 3 7 pts An investigator wishes to test the hypothesis that "blondes have more fun." To investigate, he develops the Subjective Report of Fun Scale (high scores indicate more fun), selects 13 brunettes at random and administers the SRFS to them. He then bleaches all 13 subjects' hair blonde, waits two weeks, and administers the SRFS again. Data are below. Do blondes have more fun? Brunettes Blondes 70 47 57 61 65 57 58 58 62 56 52 60 51 50 56 63 73 51 65 60 63 64 66 61 83 71 State the null and alternative hypotheses. (1) Ho: Ha: b) Specify the degrees of freedom. (1) df = c) Calculate the test statistic (3) What type of t-test is this? What was your obtained value of t? d) Given that tcrit for a=.05 is 1.782, what should the researcher conclude? State your conclusions statistically and in terms of the research question. (2) Statistical statement Conclusion in words ThinkCentre No new data to cove Last checkedNurses at Florida General plan to implement a new training program for nursing aids to deal with stress. To test the effectiveness of the training program, a 2x2 design was used. The nurses reported the following statistical statement: χ2(1, N = 12) = 2.71, p = .52. They concluded that _______. Group of answer choices There was no significant difference There was a significant difference There was a large effect size
