Tests of Between-Subjects Effects
Q: c) Find the test statistic, round answer to 1 decimal place. x² = d) What is the p-value? Round…
A: Given: Observed frequency yes no total treatment 16 50 66 control 9 94 103 total 25 144…
Q: h solving the AN
A: By using ONE WAY ANOVA k = no of treatments = 3+1 = 4 N = total sum = 3+3+3 +3 = 12 df(between) =…
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Q: Which of the following situations is appropriate for a two-factor (also called two-way) ANOVA test?…
A: Which of the following situations is appropriate for a two-factor (also called two-way) ANOVA…
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A: we have two groups one consisting of participants A, B, C, D and the other treatment is on…
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A: From the given information, let X be the number of families were found to be living below the…
Q: A study was conducted to determine the proportion of people who dream in black and white instead of…
A: Claim: The proportion of people over 55 who dream in black and white is greater than the proportion…
Q: Construct a 90% confidence interval for the true difference between the mean amounts of time spent…
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Q: Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires…
A: a. Denote p1, p2 as the true population proportions of wildfires caused by human in south and west,…
Q: How are income and degree related? The American National Election Survey asked respondents who…
A: Given: ID DEGREE INCOME EDUC 1 0 127500 13 3 1 32500 16 5 1 82500 16 6 0 6250 14 7 1…
Q: Studies indicate that excessive noise at night can affect weight gain. One study of n = 127 rats…
A: The question is about hypo. testing for a difference between two popl. means Given : Sample size (…
Q: Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 43 of the…
A: Solution To find the confidence interval we will use the z distribution i.e. z critical value.
Q: Studies indicate that excessive noise at night can affect weight gain. One study of n = 127 rats…
A: Null and alternative hypotheses: Null hypothesis: Null hypothesis is a statement which is tested for…
Q: A study was conducted to determine the proportion of people who dream in black and white instead of…
A: The given hypothesis is H0:p1=p2 versus H1:p1>p2.
Q: Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires…
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Q: a. For this study, we should use Select an answer b. The null and alternative hypotheses would be:…
A: It is given that Favourable cases, x1 = 386Sample size, n1 = 590Favourable cases, x2 = 363Sample…
Q: The director of student services at Oxnard College is interested in whether women are more likely to…
A: Let p1 and p2 be the two population proportions for women and men respectively.Given that,assume the…
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A: It is given that the SAT scores for 10 students and their college GPAs.
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Q: 2. (Table: TV and Aggressiveness) In a fictional study, a pretest-posttest design was used to…
A: The data for the number of aggressive responses before and after the television show is given with…
Q: Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 34 of the…
A: There are two independent samples which are Echinacea and placebo. Both samples come from population…
Q: A researcher conducts an independent-measures study examining how the brain chemical serotonin is…
A: A. Null and alternate hypotheses: The investigator is specifically interested to test whether the…
Q: b) Fill in the expected values, round answers to at least 2 decimal places. Expected Pain Free: Yes…
A: (b)
Q: Social functioning is the ability for an individual to interact or adapt in a normal or usual way in…
A: 1.The hypotheses for the provided test can be written as:
Q: Studies indicate that excessive noise at night can affect weight gain. One study of n = 127 rats…
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Q: A researcher is interested in whether men and women differ in terms of depression levels. They…
A: From the above data The hypothesis are H0 : μ1 = μ2H1 : μ1 ≠ μ2 i have upload the steps and output…
Q: Game consoles: A poll taken by the Software Usability Research Laboratory surveyed 341 video gamers,…
A: From the given information we have given thatn = 341x = 110p = 25% = 0.25Significance level (α) =…
Q: Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 35 of the…
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Q: Studies indicate that excessive noise at night can affect weight gain. One study of n = 127 rats…
A: Given: Group_1: n1 = 69 X1 = 22.4 s1 = 6.4 Group_2: n2 = 58 X2 = 19.9 s2 = 3.8 Formula Used:…
Q: 4. Data were collected from a pretest and posttest of students taking a two-week course in substance…
A: The given data is as follows: PretestPosttest8490857570896591718572798488858566826799
Q: Studies indicate that excessive noise at night can affect weight gain. One study of n = 127 rats…
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Q: Do iPads Help Kindergartners Learn: A Subtest The Auburn, Maine, school district conducted an early…
A: Introduction: Denote μ1, μ2 as the true population mean scores for the intervention group, and the…
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A: The expected values are, None Esterified Estrogen Conjugated Equine Estrogen Total Venous…
Q: Which statistical test should be used?
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 42 of the…
A: Answer X1 =42X2 =89n1=47n2 =102level of significance =0.01
Q: Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 39 of the…
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Q: What is the conclusion based on the hypothesis test? The P-value is | the significance level of a =…
A: State the hypotheses. Let p1 denotes the population proportion of the subjects treated with…
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A: Variables are of different types. The correct classification of variables and the identification of…
Q: Studies indicate that excessive noise at night can affect weight gain. One study of n = 127 rats…
A: Sample Mean 22.4 Standard Deviation (S1) 6.4 Sample Size(n1)…
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A: From the given information, Category Observed frequency Proportion Expected frequency=total…
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A: A researcher gathered a sample of participants who volunteered for a studying of phobias. She…
A researcher believes that gender and having an older sibling affects language learning in preschoolers. He has 24 preschoolers, 12 Male and 12 female and half of each gender have an older sibling and half do not. He measures their language development. The results are included in the following 2 X 2 ANOVA table. Using ?α =.05 state the conclusion in APA format.
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- A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 318 people over the age of 55, 77 dream in black and white, and among 298 people under the age of 25, 16 dream in black and white. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below. H4: P1 P2 H: P1 #P2 O D. Ho: P1 SP2 H1: P1#P2 O E. Ho: P1 P2 H1: P1 = P2 O F. Ho: P1 =P2 H1: P1 #P2 Identify the test statistic. z= 6.52 (Round to two decimal places as needed.) Identify the P-value. P-value = 0.000 (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? The P-value is less than the significance level of a = 0.05, so reject the null hypothesis. There is sufficient evidence to support the claim that the proportion of people over 55 who dream in black and white is greater than the proportion…Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires caused by humans in the west? 380 of the 581 randomly selected wildfires looked at in the south were caused by humans while 318 of the 503 randomly selected wildfires looked at the west were caused by humans. What can be concluded at the a = 0.10 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: Select an answer v Select an answer Select an answer v (please enter a decimal) Hj: Select an answer Select an answer vSelect an answer v (Please enter a decimal) c. The test statistic ? v (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 ? a f. Based on this, we should Select an answer g. Thus, the final conclusion is that ... |the null hypothesis. O The results are statistically significant at a = 0.10, so there is sufficient evidence to…Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires caused by humans in the west? 348 of the 574 randomly selected wildfires looked at in the south were caused by humans while 272 of the 518 randomly selected wildfires looked at the west were caused by humans. What can be concluded at the = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: Select an answer Select an answer Select an answer (please enter a decimal) H₁: Select an answer Select an answer Select an answer (Please enter a decimal) = c. The test statistic ? ◊ your answer to 3 decimal places.) (please show
- According to a report on consumer fraud and identity theft, 22% of all complaints for a year were for identity theft. In that year, Wisconsin had 787 complaints of identity theft out of 3498 consumer complaints. Does this data provide enough evidence to show that Wisconsin had a higher proportion of identity theft than 22%? Test at the 1% level. State the hypotheses. Ho: p? v Ha: p|? v Calculate the test statistic. Round to four decimal places. Calculate the standardized test statistic. Round to three decimal places. Z = Find the p-value. Round to four decimal places. p-value = State your decision. O Since the p-value is less than .01, reject Họ. O Since the p-value is greater than .01, reject Ho. O Since the p-value is less than .01, fail to reject Ho. O Since the p-value is greater than .01, fail to reject Ho. Interpret the results. O At the 1% level of significance, there is enough evidence to show that the proportion of complaints due to identity theft in Wisconsin is not equal to…B? pleaseA study was conducted to determine the proportion of people who dream in black and white instead of color. Among 295 people over the age of 55, 64 dream in black and white, and among 312 people under the age of 25, 13 dream in black and white. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of people over the age of 55 and the second sample to be the sample of people under the age of 25. What are the null and alternative hypotheses for the hypothesis test? O A. Ho: P₁ = P₂ H₁: P₁ P2 O B. Ho: P₁ P₂ H₁: P₁ = P2 O E. Ho: P₁ SP₂ H₁: P₁ P2 OC. Ho: P₁ P2 H₁: P₁ P2 OF. Ho: P₁ H₁: P₁ P₂ P2
- A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 294 people over the age of 55, 63 dream in black and white, and among 300 people under the age of 25, 19 dream in black and white. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of people over the age of 55 and the second sample to be the sample of people under the age of 25. What are the null and alternative hypotheses for the hypothesis test? A. Ho: P₁ = P2 H₁: P₁ P2 D. Ho: P₁ P2 H₁: P₁ P2 OB. Ho: P1 P2 H₁: P₁ P2 O E. Ho: P1 H₁: P₁ P2 P2 O C. Ho: P₁ P2 H₁: P₁ = P2 OF. Ho: P₁ P2 H₁: P₁ P2What type of study is this? A first-year university unit wanted to give option of online teaching to determine whether online teaching improved learning outcomes. Students were allowed to enrol into online or on-campus classes. Grades at the end of semester were compared. Select one: O Experimental O Something else O ObservationalA story spoiler gives away the ending early. Does having a story spoiled in this way diminish suspense and hurt enjoyment? A study1 investigated this question. For twelve different short stories, the study’s authors created a second version in which a spoiler paragraph at the beginning discussed the story and revealed the outcome. Each version of the twelve stories was read by at least 30 people and rated on a 1 to 10 scale to create an overall rating for the story, with higher ratings indicating greater enjoyment of the story. The ratings are given in Table 1 and stored in StorySpoilers. Stories 1 to 4 were ironic twist stories, stories 5 to 8 were mysteries, and stories 9 to 12 were literary stories. Here we measure the size of the effect on mean rating. Find a 95% confidence interval for the difference in mean enjoyment rating between stories with a spoiler and stories without.Click here for the dataset associated with this question.Round your answers to three decimal places.The 95%…
- Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires caused by humans in the west? 356 of the 579 randomly selected wildfires looked at in the south were caused by humans while 322 of the 597 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: Hn: Select an answer v Select an answer v Select an answer v (please enter a decimal) Hj: Select an answer v Select an answer v Select an answer v (Please enter a decimal) c. The test statistic ? v= (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 ? v a f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The results are statistically significant at a = 0.01, so there is sufficient…A statistician changes her level of significance from .001 to .05. What impact will this change have on her risk of making a Type I and Type II error? Is the change in the level of significance a good decision? Why or why not?You want to find the prevalence of e-cigarette smoking is a given community. Which of these study designs would you use to test the hypothesis? Case-controlB. Cross-sectionalC. Cohort D. Experimental trials