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3 years ago

Please help me ASAP.

Mathematics

2 answers:

Mademuasel [1]3 years ago

8 0

A = 3/4, an unsimplified version of this can be 6/8

B = 3/5, an unsimplified version of this could be 6/10

C = 3/2(unsimplified), or 1 1/2(simplified)

D = 3/1(unsimplified), or 3(simplified)

Hope I could help

WITCHER [35]3 years ago

7 0

Answer:

A=3/4 B=3/5 C= 3/2 and/or 1 1/2 D=3/1 and/or 3

Step-by-step explanation:

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3 years ago

The accompanying data represent the daily (for example, Monday to Tuesday) movement of Johnson & Johnson (JNJ) stock for

egoroff_w [7]

Supposing that the stock increases in 37 days, the 95% confidence interval for the proportion of days JMJ stock increases is: (0.484, 0.7292)

The lower bound is of 0.484.
The upper bound is of 0.7292.

The interpretation is that we are 95% sure that the true proportion of all days in which the JMJ stock increases is between 0.484 and 0.7292.

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

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Supposing that it increases on 37 out of 61 days:

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95% confidence level

So $\alpha = 0.95$ , z is the value of Z that has a p-value of $\frac{1+0.95}{2} = 0.975$ , so $z = 1.96$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6066 - 1.96\sqrt{\frac{0.6066(0.3934)}{61}} = 0.484$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6066 + 1.96\sqrt{\frac{0.6066(0.3934)}{61}} = 0.7292$

The 95% confidence interval for the proportion of days JMJ stock increases is (0.484, 0.7292), in which 0.484 is the lower bound and 0.7292 is the upper bound.

The interpretation is that we are 95% sure that the true proportion of all days in which the JMJ stock increases is between 0.484 and 0.7292.

A similar problem is given at brainly.com/question/16807970

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3 years ago

Jayden evaluated the expression a ÷ (2 + 1.5) for a = 14. He said that the value of the expression was 8.5. Select all the state

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Step-by-step explanation:

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cupoosta [38]

Correct answer:
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Step-by-step explanation:

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3 years ago