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Effectus [21]
3 years ago
9

Plz help me with this two ❤

Mathematics
2 answers:
Aloiza [94]3 years ago
7 0
I think the first one should be a fraction
nydimaria [60]3 years ago
3 0
The answer is forty nine
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There were 196 students that participated in a clean-up event at a nearby lake. this is one fourth of the entire student populat
Norma-Jean [14]
Hello there.

<span>There were 196 students that participated in a clean-up event at a nearby lake. this is one fourth of the entire student population. write and solve an equation to find the number of students at this school.

Answer: x is the number of students in the school.
</span>\frac{x}{4} = 196.
<span>196 x 4 = 784.
Therefore the number of students in this school is 784.

Hope This Helps You!
Good Luck Studying ^-^</span>
6 0
4 years ago
Matt help plus<br> Nskdnisbeineijsbd
mestny [16]

Answer:

Step-by-step explanation:

8 0
4 years ago
Need help on this please
Alex787 [66]
3 is the first one.
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3 0
4 years ago
10.A noted psychic was tested for ESP. The psychic was presented with 200 cards face down and askedto determine if the card was
lions [1.4K]

Answer:

Step-by-step explanation:

The sample proportion \hat p = \dfrac{50}{200}

\hat p = 0.25

The null hypothesis and the alternative hypothesis:

H_o: p = 0.20  \\ \\  H_1 : p > 0.20

Thus; the test statistics is:

Z = \dfrac{\hat p - p_o}{\dfrac{p_o(1-p_o)}{n} }

Z = \dfrac{0.25 -0.20}{\sqrt{\dfrac{0.20(1-0.20)}{200} }}

Z = \dfrac{0.05}{\sqrt{\dfrac{0.16}{200} }}

Z = \dfrac{0.05}{\sqrt{0.0008 }}

Z = 1.768

P-value = 2 × P(Z< - 1.768)

From the z tables

P-value = 2 × 0.03853

P-value = 0.07706

Thus, the p-value is 0.05 < P-value < 0.10

8 0
3 years ago
You can buy 1 pencil for $0.50. How much would a dozen cost you
Rainbow [258]

Answer:

$6

Step-by-step explanation:

1 pencil is 50 cents. 12 pencils cost $6

3 0
3 years ago
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