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Leni [432]
3 years ago
11

In randomized, double-blind clinical trials of a new vaccine, monkeys were randomly divided into two groups. Subjects in group 1

received the new vaccine while subjects in group 2 received a control vaccine. After the second dose, 132 of 452 subjects in the experimental group (group 1) experienced drowsiness as a side effect. After the second dose, 39 of 103 of the subjects in the control group (group 2) experienced drowsiness as a side effect. Does the evidence suggest that a different proportion of subjects in group 1 experienced drowsiness as a side effect than subjects in group 2 at the alpha=0.10 level of significance? Determine the null and alternative hypotheses. Choose the correct answer below. A. ^ H 0 : p 1 = 0 versus ^ H 0 : p 1 not = 0 B. ^ H 0 : p 1 = p 2 versus ^ H 1 : p 1 not = p 2 C. ^ H 0 : p 1 = p 2 versus ^ H 1 : p 1 < p 2 D. ^ H 0 : p 1 = p 2 versus ^ H 1 : p 1 > p 2 The test statistic z 0 is negative 1.73. (Round to two decimal places as needed.) The P-value is 0.084. (Round to three decimal places as needed.) What is the result of this hypothesis test? A. Reject the null hypothesis because there is not sufficient evidence to conclude that a different proportion of subjects in group 1 experienced drowsiness as a side effect than subjects in group 2 at the alpha=0.10 level of significance.
Social Studies
1 answer:
Mama L [17]3 years ago
5 0

The correct answer is B.

<u>Therefore the appropiate null and alternative hypothesis are the following:</u>

. H 0 : p 1 = p 2

H 1 : p 1 ≠ p 2

The aim of the test would be to conclude whether H0 should be rejected or not at a 10% significance level.

<u>In this case a billateral significance test needs to be conducted,</u> as such a test consists on testing the equality of the test value with a given value. In this case the H0 would be rejected if the test value is significanly different, both in the case that it is superior or inferior.

On the contrary, an unilateral significance test would have been conducted if  aiming to check whether a value is superior or equal to the test value (left unilateral) or inferior or equal to this value (right unilateral).

Then, the result of the test is the one stated: rejecting H0 at the 10% significance level.

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The correct answer is "Core beliefs".

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Core beliefs can be understood as the things that we hold to be the real absolute truths, They are found underneath our surface beliefs.

Usually we accept our core beliefs without question but individuals are not aware all the time about their own core beliefs, becauuse they don't have inmediate access to such part of the script.

In conclusion, closest to the surface of consciousness reside the superficial beliefs on how we should  think, feel and act, but below that surface individuals have the more elusive part of their script, which is called our "core beliefs".

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1. Why is it important that speeches be organized clearly and coherently?

It is important that speeches are organized clearly and coherently because the audience is able to follow along with you more easily and they can understand your idea as a whole. It also make the speaker grab attention from the audience and makes them more trustworthy.  

2. How many main points will your speeches usually contain?  

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Why is it important to limit the number of main points in your speeches?

It is important to limit the number of main points in your speeches because if you have too many the audience will have trouble sorting out what each main point is. It also doesn't allow you to expand much on each point if the speech is in an allotted time frame.

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- Internal summaries are the flip side of internal previews. Rather than indicating what subpoints are to follow in the speech, internal summaries remind the listeners what subpoints have been discussed and they are excellent ways to reinforce and clarify ideas which are essential for the audience to remember.  

- Signposts are short statements which tell the audience where the speaker is in the speech. Often times signposts are numbers of words which suggest that what the speaker is about to say is important.  

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