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mrs_skeptik [129]
3 years ago
11

The number of marbles of different colors stored in a hat is listed below:

Mathematics
2 answers:
oksian1 [2.3K]3 years ago
7 0

Answer:

1/4

Step-by-step explanation:

The probability of drawing a blue marble, the first time, is 9 blue out of total 18

9/18 =1/2

However,

The probability of drawing a blue marble The second time

1/2. X 1/2 = 1/4

expeople1 [14]3 years ago
6 0
9/18 so 1/2 i think   hope this helps
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Step-by-step explanation:

art

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If (-2, y) lies on the graph of y = 3Y, then y =
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Answer:

y = 1/9

Step-by-step explanation:

(-2, y) = (x, y)

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2. What is the mode for the data set 13, 11, 10, 12, 14, 9,
Mashutka [201]

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What is 5/8ths of 80??
Vadim26 [7]
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3 years ago
A local board of education conducted a survey of residents in the community concerning a property tax levy on the coming local b
IrinaK [193]

Answer:

a. [ 0.454,0.51]

b. 599.472 ~ 600

Step-by-step explanation:

a)

Confidence Interval For Proportion

CI = p ± Z a/2 Sqrt(p*(1-p)/n)))

x = Mean

n = Sample Size

a = 1 - (Confidence Level/100)

Za/2 = Z-table value

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Mean(x)=410

Sample Size(n)=850

Sample proportion = x/n =0.482

Confidence Interval = [ 0.482 ±Z a/2 ( Sqrt ( 0.482*0.518) /850)]

= [ 0.482 - 1.645* Sqrt(0) , 0.482 + 1.65* Sqrt(0) ]

= [ 0.454,0.51]

b)

Compute Sample Size ( n ) = n=(Z/E)^2*p*(1-p)

Z a/2 at 0.05 is = 1.96

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ME = 0.04

n = ( 1.96 / 0.04 )^2 * 0.482*0.518

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8 0
3 years ago
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