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SCORPION-xisa [38]
3 years ago
14

A leading medical journal claims that 68% of high school students experience anxiety just before an exam. A school counselor wan

ts to conduct a survey to verify this with the students in her school and wants to do so with a margin of error (ME) of ±7%. What minimum sample size, rounded to the nearest whole person, does the counselor need to use? Hint: ME equals plus or minus two times square root of start fraction p hat left parenthesis one minus p hat right parenthesis over N end fraction end square root, where p hat is the yes proportion in the sample and N is the sample size.
N ≥ 175
N ≥ 178
N ≥ 200
N ≥ 262
Mathematics
1 answer:
BigorU [14]3 years ago
5 0
The answer is N<span>≥ 178. I just had this question and that was right.</span>
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30 points 1 question PLEASE HELP ME OUT I REALLY NEED IT
Pachacha [2.7K]

Answer:

p(-5/3) ≠  0 So, (3 x +5) is NOT A FACTOR of p(x)

Step-by-step explanation:

Here, the given function is p(x)=3x^5+2x^2 - 5

Now, the given root of the function is ( 3x +5)

Now, if ( 3 x +  5) = 0,

we get x = - 5/3

So, the zero of the given polynomial is x = -5/3

Then,  x = -5/3, p(x)  =0 ⇒   ( 3 x + 5) is a FACTOR of p(x)

Now, let us find the value of function at x = -5/3

Substitute x = -5/3 in the given function p(x), we get:

p(x)=3x^5+2x^2 - 5  \implies p(\frac{-5}{3})  = 3(\frac{-5}{3})^5 + 2(\frac{-5}{3})^2 - 5\\= 3(\frac{-3,125}{243}) + 2(\frac{25}{9})  - 5\\= (\frac{-3,125}{81}) + (\frac{50}{9})  - 5\\= -38.580 + 5.56  - 5  =  -38.02\\\implies p(\frac{-5}{3})  = -38.02

Now, as p(-5/3) ≠  0 So, (3x +5) is NOT A FACTOR of p(x)

6 0
3 years ago
Weight is simply the force of gravity acting on an object. TRUE or FALSE
Digiron [165]
The answer is true. .........
3 0
3 years ago
Read 2 more answers
Select each set of points that are coplanar.
3241004551 [841]
Answer:
J, K, and L

Explanation:
It needs to be a flat surface to be the same coplanar the only answer that is flat is J, K, and L
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3 years ago
Solve the following equation<br> 7 • 10^n = 7000
marysya [2.9K]

Answer:

N=3

Step-by-step explanation:

7.10^n =7000

10^n =1000

10^n = 10^3

(coz bases are the same powers are equal)

Therefore n =3

3 0
3 years ago
en dos líneas paralelas cortadas por una trasversal el valor de un ángulo es 2×-14 y su suplementario mide 3×-18​
ASHA 777 [7]

Responder:

x = 42,4

Explicación paso a paso:

Podemos encontrar el valor de x ya que no se nos dice qué buscar

La suma de dos ángulos suplementarios es 180 grados, por lo tanto;

2x - 14 + 3x - 18 = 180

2x + 3x - 32 = 180

5 veces = 180 + 32

5 veces = 212

x = 212/5

x = 42,4

Por tanto, el valor de x es 42,4

3 0
3 years ago
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