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Allushta [10]
2 years ago
12

In a random sample of 62 professional actors, it was found that 40 were extroverts. Please find the point estimate, 95% confiden

ce interval for p, and provide a brief explanation of your answers.
Mathematics
1 answer:
den301095 [7]2 years ago
3 0

The point Estimate is 0.645 , the confidence interval is (0.525 ,0.764).

<h3>What is Point Estimate ?</h3>

The point estimate is the proportion of success in the sample.

From the data given

p = 40/62

p = 0.645

The point Estimate is 0.645

(b) Confidence interval for true proportion is

\rm {p -Z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}  , p +Z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}

For 95 % Z = 1.96

p =0.645

1-p = 0.355

putting the values

\rm {0.645 -1.96 \sqrt{\dfrac{0.645\times0.355}{62}}  , {0.645 +1.96 \sqrt{\dfrac{0.645\times0.355}{62}} \\

(0.525 , 0.764)

Lower Limit = 0.525

Upper Limit = 0.764

To know more about Point Estimate

brainly.com/question/17514579

#SPJ1

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Answer:x=90° y=58° z=32°

Step-by-step explanation:

x=90

y=180-(90+32) sum of angles in a triangle is 180

y=58

y+90+z=180 they are supplementary

58+90+z=180

148+z=180

z=180-148

z=32

5 0
4 years ago
(2.5×10^−10)(7×10^−6)
Nataly [62]
<span>(2.5×10^−10)(7×10^−6) 
= (2.5 x 7) (</span>10^−10 x 10^−6)
= 17.5 x 10^-16
= 1.75 x 10^-15

answer
<span>B. 1.75×10^−15 </span>
6 0
3 years ago
9/10_ 78/100<br>greater equal less than​
emmainna [20.7K]

Answer:

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Step-by-step explanation:

9/10 * 10/10 = 90/100

90/100 > 78/100

7 0
3 years ago
What is the square root of -1?<br> -j.<br> -1
Sindrei [870]

Answer:

Its not a real number for the square roots of negative number

its not possible... \sqrt{-4} = -2 x -2   no...   2 x 2   no..... -2 x 2 yea but thats not square root anymore...

Step-by-step explanation:

Give me brainliest!!!

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3 years ago
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ki77a [65]
<span>What number should be added to both sides of the equation to complete the square? x^2 + 3x = 6
Answer: 13/2</span>
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3 years ago
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