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likoan [24]
3 years ago
14

I will give anyone brainliest thats writes down the correct answer for rhis question Layla is using the model to solve a divisio

n problem.
An area model has 4 shaded parts and 2 unshaded parts. The shaded part is labeled two-thirds.
Which question would the model be most helpful in solving?
How many One-sixths are in 4?
How many One-sixths are in Two-thirds?
How many Two-thirdss are in 4?
How many Two-thirdss are in One-sixth?
Mathematics
1 answer:
MAVERICK [17]3 years ago
6 0

Answer:

How many One-sixths are in Two-thirds?

Step-by-step explanation:

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A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 335335 babies were​ born
strojnjashka [21]

Answer:

The 99​% confidence interval estimate of the percentage of girls born is (74.37%, 85.63%).

Usually, 50% of the babies are girls. This confidence interval gives values considerably higher than that, so the method to increase the probability of conceiving a girl appears to be very effective.

Step-by-step explanation:

Confidence Interval for the proportion:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

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

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 335, \pi = \frac{268}{335} = 0.8

99% confidence level

So \alpha = 0.01, z is the value of Z that has a pvalue of 1 - \frac{0.01}{2} = 0.995, so Z = 2.575.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.8 - 2.575\sqrt{\frac{0.8*0.2}{335}} = 0.7437

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.8 + 2.575\sqrt{\frac{0.8*0.2}{335}} = 0.8563

For the percentage:

Multiplying the proportions by 100.

The 99​% confidence interval estimate of the percentage of girls born is (74.37%, 85.63%).

Usually, 50% of the babies are girls. This confidence interval gives values considerably higher than that, so the method to increase the probability of conceiving a girl appears to be very effective.

7 0
3 years ago
Solve for the value of M
Degger [83]

Answer:

Is that Deltamath?

Step-by-step explanation:

3 0
3 years ago
Help me I got 25 missing assignments
leva [86]

Answer:

think it's the last one

Step-by-step explanation:

sorry if i'm wrong

6 0
2 years ago
A shop buys pairs of trainers for £20 each. They sell them to make a 30% profit on each pair. What is the selling price of the t
Alexxx [7]

Answer:

60 dollars i think

Step-by-step explanation:

3 0
3 years ago
A lone segment has ______ endpoints.<br><br>1) three<br>2)two<br>3)zero<br>4)one​
Nikolay [14]

Answer:

<h2><em><u>2)</u></em><em><u> </u></em><em><u>two</u></em></h2>

Step-by-step explanation:

A line segment forms when it has two end points

8 0
3 years ago
Read 2 more answers
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