Researchers conducted a study to assess the effect of an education campaign in increasing knowledge of Treatment as Prevention as a method of preventing transmission of HIV. Each participant's knowledge was assessed before and after a brief education campaign. Knowledge was assessed using a seven-point scale where 1 represents low knowledge and 7 represents high knowledge State the null hypothesis and alternative hypothesis for this study.  b) What test is appropriate to test your null hypothesis? Why is this test appropriate? Provide supporting figures and/or statistics to justify your decision.

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A: To test, the null and alternative hypotheses: Ho : Three programs produce same result Ha : At least…

Q: Determine the null and alternative hypotheses. O A. Ho: The amount of smoking is independent of seat…

A: 0 1-14 15-34 35 and over Total wear selt belts 197 12 44 6 259 dont wear selt belt 150…

Q: n general, if sample data are such that the null hypothesis is rejected at the ? = 1% level of…

A: α = 1% or 0.01   ___________________________    P-value (One Tailed ) = P-value (2 Tailed)2

Q: What is the Null and Alternative Hypothesis? Factors affecting the learning styles of Students in…

A: The test is to check whether factors affecting the learning styles of students in online class.

Q: A study of seat belt users and nonusers yielded the randomly selected sample data summarized in the…

A: Answer: To calculate the value of chi-square test statistics.

Q: A study of seat belt users and nonusers yielded the randomly selected sample data summarized in the…

A: Claim : the amount of smoking is independent of seat belt use.

Q: What is the difference between a fixed effect factor and a random effect factor?

A: The fixed effect factor is defined as when data has been gathered from all the levels of the factor…

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A:

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A: Power of a test:It is the probability of correctly rejecting the null hypothesis H0 when it is…

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A:

Q: 1) Four drug companies are studying the effect of their new drugs. In its clinical trials, company A…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…

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A:

Q: controlled experiment in which an intervention is given to determine its effect on a certain disease…

A: Solution: answer: Epidemiological study

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A: Four steps of hypothesis testing: Step 1: create a null and alternate hypothesis. For all…

Q: What is the null hypothesis for the study?

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A: given data, claim:p>0.24x=857n=3401α=0.05we have to complete hypothesis for the given data,

Q: Before Participating After Participating 4 7 3 7 3 2 3 4 2 7 5 4 7 4 X = 5.5 X = 1.93 X = 3.13 X =…

A: As the usual nature of hypothesis testing allows us to set up the null hypothesis (H0) rejecting the…

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A: Solution: It is given that 19% of deaths among male students can be attributed to heart diseases.

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A: Introduction: Selection bias is a type of bias arising in studies where randomization is not…

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.