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3 years ago

6

A researcher determines the probability that a research study will reveal something new is p = 0.80. What is the probability tha

t the study will reveal something new or not reveal something new?

2 answers:

SVETLANKA909090 [29]3 years ago

6 0

Answer:

the probibilty is 1

Step-by-step explanation:

dezoksy [38]3 years ago

3 0

Answer:

1

Step-by-step explanation:

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A study found that out of 300 people 60% of them prefer to eat hamburgers rather than hot dogs. Find the 95% confidence interval

Lerok [7]

Answer:

(0.5446, 0.6554)

Step-by-step explanation:

As the sample is sufficiently large, the formula is used to estimate the proportion shown in the attached image.

Where:

P: sample proportion = 0.6

n: Sample size = 300

$1-\alpha$ : Confidence level = 0.95

α: Significance = 0.05

$Z_{\alpha / 2} = 1.96$ *

* Obtained from the normal standard table.

When introducing these values in the formula shown in the image we obtain:

$0.6 + 1.96 *\sqrt {\frac{0.6*0.4}{300}}$

$0.6 - 1.96 *\sqrt{\frac{0.6*0.4}{300}}$

Finally, the confidence interval is:

(0.5446, 0.6554)

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Answer:

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Step-by-step explanation:

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If f(x)x^2-3 and g(x)x^1/3+7, what is f(x)g(x) when x=8?

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Step-by-step explanation:

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