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Tatiana [17]
3 years ago
11

How to use replacement in probability

Mathematics
1 answer:
dolphi86 [110]3 years ago
7 0

Step-by-step explanation:

Replacement means the probability of each trial is the same (the trials are independent).

For example, let's say you have a standard deck of 52 cards, and you want to find the probability of drawing a queen card twice.

There are 4 queens, so the probability on the first draw is 4/52.

You then replace the queen, so there are still 4 queens in the deck.  So the probability on the second draw is still 4/52.

The total probability is the product: 4/52 × 4/52 = 1/169

If you didn't replace the queen after the first draw, there would have been 3 queens in the deck, and the probability on the second draw would have been 3/52.

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Find the x−and y−intercepts.
Alexeev081 [22]
Y intercept is (0,-7) and x interpret is (-2,0)
5 0
3 years ago
Katy bought 5 packages of cake mix for $32.50. How much would 8 packages of cake mix cost?
AleksAgata [21]

Answer:

$52

Step-by-step explanation:

5 packages = $32.50

divide both sides by 5

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times by 8

8 package = $52

7 0
2 years ago
Plss show explanation! what is 1/4 + 1/3 + 11/12
maks197457 [2]

6 1/2

First you find a common denominator. 1/4 = 3/12 and 1/3 = 4/12.

3/12 + 4/12 + 11/12 = 18/12.

18/12 = 6 6/12 = 6 1/2

3 0
3 years ago
Read 2 more answers
What is the mean median mode and range of the numbers 31 28 30 31 30 ...?
mamaluj [8]
1. Mean is the number you get when you add all these numbers and then divide by the number of numbers. So, (31 + 28 + 30 + 31 + 30) / 5 = 150 / 5 = 30
2. The median is the middle number in the list of numbers, so, the answer is 30 as well.
3. Mode is the number that appears most often, so here it is 30 and 31 because they both appear 2 times.
4. Range is the difference between the largest and smallest number, so 31 - 28 = 3. 
5 0
3 years ago
Can someone answer this question please (picture)
erik [133]

Answer:

31.5 units^2

Step-by-step explanation:

Rectangle area (RA) = l × w

Triangle area (TA) = (bh)/2

RA = 3 × 7

RA = 21

TA = (7 × 3)/2

TA = 21/2

TA = 10.5

(Triangles are congruent as shown by the lines on each side of the triangle so I can calculate area of both of them together as I just did)

Add areas together

21 + 10.5 = 31.5

7 0
3 years ago
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