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AnnyKZ [126]
3 years ago
14

Several million lottery tickets are sold, and 21% of the tickets are held by men. Suppose you select a random sample of people a

nd let X represent the number of people in your sample for which are men with winning tickets. What type of random variable is X?
hypergeometric

Bernoulli

poisson

uniform
Mathematics
1 answer:
valina [46]3 years ago
5 0

Answer:

hypergeometric

Step-by-step explanation:

For each winning ticket, there are only two possible outcomes. Either it is held by a men, or it is not.

There is a set number of X, and as the number of winning tickets decrease, the probability of a winning ticket being held by a men can decrease or increase. This is a characteristic of the hypergeometric distribution.

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the dimensions of a smaller rectangle are 3ft by 9ft the dimensions of a larger rectangle are 5ft by 15ft find the ratio of the
Alexxandr [17]

The ratio of the area of the smaller rectangle to the area of the larger

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Step-by-step explanation:

The formula of the area of a rectangle is A = l × w, where l and w

are its dimensions

  • The dimensions of a smaller rectangle are 3 ft by 9 ft
  • The dimensions of a larger rectangle are 5 ft by 15 ft

We want to find the ratio of the area of the smaller rectangle to

the area of the larger rectangle

∵ The dimensions of the smaller rectangle are 3 ft and 9 ft

∴ The area of the smaller rectangle = 3 × 9 = 27 feet²

∵ The dimensions of the larger rectangle are 5 ft and 15 ft

∴ The area of the smaller rectangle = 5 × 15 = 75 feet²

Let us find the ratio of the area of the smaller rectangle to the area

of the larger rectangle

→ smaller rectangle  :  larger rectangle

→ 27                           :  75

Divide the both terms of the ratio by 3

→ 9                             :  25

The two terms of the ratio do not divisible by any other number

∴ The simplest form of the ratio is 9 : 25

∴ The ratio of the area of the smaller rectangle to the area of the larger

   rectangle = \frac{9}{25}

The ratio of the area of the smaller rectangle to the area of the larger

rectangle is \frac{9}{25}

Learn more:

You can learn more about the ratio in brainly.com/question/10781917

#LearnwithBrainly

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The MAD = 7.21875.

Hope this helps.
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Step-by-step explanation:

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Step-by-step explanation:

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