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nydimaria [60]
2 years ago
9

A leading medical journal has claimed that 71% of roller coaster rides get extreme anxiety just before the ride begins. A popula

r theme park wants to conducts a survey to verify this the patrons in their park and wants to do so with a margin of error of +8%. What minimum sample size, rounded to the nearest whole person, would the theme park need to use?
A. N ≥ 129
B. N ≥ 118
C. N ≥ 150
D. N ≥ 75
Mathematics
1 answer:
Anastasy [175]2 years ago
8 0

Answer:

A

Step-by-step explanation:

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What is f(x)= -2+7 where x= -5?
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Answer:

17

Step-by-step explanation:

f(x)= -2x+7

f(-5)= -2(-5)+7

              10+7

         f(-5)=17

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Select the equation written in point-slope form.
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If you have a 59% in your class, and you take a test that is worth 200 points and it is 25% of your grade, and you get all 200 p
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Step-by-step explanation:

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Dustin has a bag of marbles with 4 blue marbles, 4 white marbles, and 3 red marbles.
diamong [38]

Answer:

A.

\dfrac{6}{55}

B.

\dfrac{6}{55}

C.

\dfrac{4}{165}

Step-by-step explanation:

Dustin has a bag of marbles with 4 blue marbles, 4 white marbles, and 3 red marbles. There are 11 marbles in total.

A. The probability that the first marble drawn is blue marble is

\dfrac{4}{11},

the probability that the second marble drawn is red marble is

\dfrac{3}{10}

The probability that the first marble drawn is blue and the second is red is

\dfrac{4}{11}\cdot \dfrac{3}{10}=\dfrac{12}{110}=\dfrac{6}{55}

B. The probability that the first marble drawn is red marble is

\dfrac{3}{11},

the probability that the second marble drawn is white marble is

\dfrac{4}{10}

The probability that the first marble drawn is red and the second is white is

\dfrac{3}{11}\cdot \dfrac{4}{10}=\dfrac{12}{110}=\dfrac{6}{55}

C. The probability that the first marble drawn is blue marble is

\dfrac{4}{11},

the probability that the second marble drawn is blue marble is

\dfrac{3}{10},

the probability that the third marble drawn is blue marble is

\dfrac{2}{9},

The probability that the first, second and third marbles drawn are blue is

\dfrac{4}{11}\cdot \dfrac{3}{10}\cdot \dfrac{2}{9}=\dfrac{24}{990}=\dfrac{4}{165}

8 0
2 years ago
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