In an observational study it was found that people who had received the flu shot this year had better blood pressure readings, on average, than people who did not.  Can it be claimed that the flu shot is the cause of the lower overall blood pressure?  Why or why not?

Q: .What percentage of females are smokers?  2.What percentage of people who do not smoke are males?…

A: Cross tabulation helps a researcher to analyze the results of bivariate relationship between the…

Q: When looking to understand the Z score what does it actually mean in simple terms in comparison to…

A: The value of the z-score tells you how many standard deviations you are away from the mean. If a…

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Q: What is meant by an influential observation?

A: The definition of an influential observation is give bas follows:

Q: Does statistically different indicate substantially different? Why or why not?

A: No, statistically different does not indicate substantially different. These two are different…

Q: (a) Construct a 95% confidence interval for the difference in mean pain intensity between the two…

A: The degrees of freedom is, df=n1+n2-2=73+76-2=147 Computation of critical value: The critical value…

Q: what happens If the Levene's test is statistically significant?

A: Levene's test is an inferential measure used in statistics to determine the equality of variances…

Q: A medical journal reported on an experiment intended to see if a certain drug could be used as a…

A: Since you have posted a question with multiple sub-parts, we will solve the first 3 sub-parts for…

Q: The alternative hypothesis for an ANOVA states that

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Q: What is meant by a result being statistically significant?

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Q: Suppose we want to use systolic blood pressure to predict diastolic blood pressure. The explanatory…

A: Solution

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A: Given information: The output of test for independence is given.

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A: HI, as per our policy, we'll answer the first three subparts for you.  Given:

Q: Given the results of the ANOVA (in the picture), which of the following is NOT correct?

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A:

Q: What does it mean when the difference is statistically significant?

A: STATISTICALLY SIGNIFICANT MEANS NULL HYPOTHESIIS IS REJECYED.

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Q: at a 0.10 significance level?

A: No treatment  Fertilizer  Irrigation  Fertilizer and irrigation  1.212 0.939 0.069 0.852…

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A:

Q: Is this a valid experimental design?

A: Here student want to check fertilizer affect the plant growth

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Q: Why is an experimental confound so damaging to the conclusions drawn from an experiment?

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A:

Q: It was estimated that 20% of adult Americans suffer from some degree of hearing loss. A researcher…

A:

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Q: What is the empirical rule?

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Q: The term clinical means that the study involves people.  True  False

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Q: Is this study experimental or observational? Justify.

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A: Solution:

Q: When do you consider a person to be statistically literate?

A: From the given information we find solution

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Q: If a treatment is expected to decrease scores in a population with µ= 30, then the alternative…

A: If a treatment is expected to decrease scores in a population with µ= 30, then the alternative…

Q: What does it mean to be statistically literate?

A: Thanks for giving opportunity to serve for bartleby students,   Hey, There ! Thank you for posting…

Q: A type 2 error occurs when a treatment actually does have an effect on the scores but the effect was…

A: True. we know that, type 2 error occurs when we fail to reject Null hypothesis when it is actually…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.