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makvit [3.9K]
3 years ago
14

Use a normal approximation to find the probability of the indicated number of voters. In this case assume that 150 eligible vote

rs aged 18-24 are randomly selected. Suppose a previous study showed that among eligible voters aged 18-24, 22% of them voted.
The probability that fewer than 39 of 150 eligible voters voted is
Mathematics
1 answer:
alexdok [17]3 years ago
8 0
The number of people who voted follows a binomial distribution with probability of having voted p=0.22 and n=150 subjects, which means the approximating normal distribution should have mean np=33 and standard deviation \sqrt{np(1-p)}\approx5.07.

With the continuity correction, you have

\mathbb P(X
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Consider 7×10^3. Write a pattern to find the value of the expression
kkurt [141]

Answer:

7*10*10*10 = 7000

7*10 = 70

70*10 = 700

700*10 = 7000

Step-by-step explanation:

The given expression is:

7*10^3

Here 10^3 means that 10 will be multiplied 3 times:

7*10*10*10 = 7000

How did we get 7000?

7*10*10*10 = 7000

7*10 = 70

70*10 = 700

700*10 = 7000

We can also say that there are 7  1000s in 7000....

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2 years ago
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A fair coin will be tossed 3 times. What is the probability that one heads and two tails in any order will result?
ad-work [718]

Answer:

2

Step-by-step explanation:

If you toss a fair coin three times, these are the possible results.

HHH

HHT

HTH

HTT   <--------- one Heads, two Tails

THH

THT   <--------- one Heads, two Tails

TTH

TTT

Answer: 2

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3 years ago
ella opend a coffe shop in her neighborhood. the graph below shows the number of cups of coffe sold each hour ,x, on the opening
Katen [24]
Time is 4 hrs., coffee is 0 cups. Point (4,0)
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3 years ago
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The coefficient of 2(3)(6)Q is _____. 36 18 12
seraphim [82]
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During a spring clearance sale, Sears advertise 1/4 off the list of Model II microwave ovens and an additional 1/5 off the sale
ozzi

Answer:

$ 75.

Step-by-step explanation:

From the information above,

List price of model II = $240

Sale price of the clearance sale is 1/4 off the list price of Model II microwave oven and additional 1/5 of the sale price for oven that are scratched and dented.

Therefore,

Let the sale price be X,

= (1/4)*(list price) + (1/5)*X

X = (1/4)*(240) + (1/5)*X

X = 60 + (1/5)X

Solving for X,

X - (1/5)X = 60

(4/5)X = 60

X = (60*5)/4

= $75.

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2 years ago
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