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dybincka [34]
3 years ago
6

Determine the sample size required to estimate the mean score on a standardized test within 4 points of the true mean with 98% c

onfidence. Assume that s = 15 based on earlier studies.
Mathematics
1 answer:
Darina [25.2K]3 years ago
3 0

Answer:

67

Step-by-step explanation:

You have to use fractions to show your work and I'm not going to do that but just know that it is the answer.

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Which of the following points is in the solution set of y &lt; x2 - 2x - 8?<br>(-2, -1)(0, -2)(4, 0)
ratelena [41]
Y < (x - 4)(x + 2)

so the critical points are -2 and 4
(-2,-1) will be in the solution

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(4,0) will not.
the answer is ((-2,-1)
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4.8, I hope this helps you, I answered this earlier. :)
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8 + 5n - 6, use n = 6
emmainna [20.7K]
8+5n-6

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3 years ago
Please Find the distance between the two points rounding to the nearest tenth (if necessary).
Sphinxa [80]

Answer:

10.29 u

Step-by-step explanation:

<u>Given :- </u>

  • Two points (7,4) and (-2,9) is given to us.

And we need to find out the distance between the two points . So , here we can use the distance formula to find out the distance. As,

:\implies D = √{(x2-x1)² + (y2-y1)²}

:\implies D =√[ (7+2)² +(9-4)²]

:\implies D =√[ 9² +5²]

:\implies D =√[ 81 +25]

:\implies D = 10.29

<h3>Hence the distance between the two points is 10.29 units .</h3>
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