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faltersainse [42]
3 years ago
7

Determine whether the given procedure results in a binomial distribution. If not, state the reason why. Choosing 5 marbles from

a box of 40 marbles (20 purple, 12 red, and 8 green) one at a time without replacement, keeping track of the number of red marbles chosen. Not binomial: the trials are not independent. Not binomial: there are too many trials. Procedure results in a binomial distribution. Not binomial: there are more than two outcomes for each trial. g
Mathematics
1 answer:
Rudiy273 years ago
5 0

Answer:

Not binomial: the trials are not independent.

Step-by-step explanation:

Binomial distribution:

In samples with replacement, as the probability has to be the same for each trial, that is, they are independent.

Hypergeometric distribution:

Samples without replacement, as the probabilities depends on the previous outcomes, that is, they are not independent.

In this question:

Marbles are chosen without replacement, which means that for each trial the probabilities of choosing a red marble are different, which means that the trials are not independent. So the answer is:

Not binomial: the trials are not independent.

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4 years ago
Delaney would like to make a 5 lb nut mixture that is 60% peanuts and 40% almonds. She has several pounds of peanuts and several
Alchen [17]

Answer:

a) The system that models the situation is:

p + 0.2m = 3

p + m = 5

b) The solution of the system is:

m = 2.5

p = 2.5

Step-by-step explanat:

It is desired to obtain 5 pounds of a mixture containing 40% peanuts and 60% almonds.

It has a mixture of 20% peanuts and 80% almonds.

p: number of pounds of peanuts

m = amount of mixture

The equation that represents the amount of peanut and mixture that is needed is:

p + m = 5 pounds

m = 5-p (i)

The amount of peanut in total that the mixture should have is:

p + 0.2m = 0.6 (5)

p + 0.2m = 3 (ii)

a) The system that models the situation is:

p + 0.2m = 3

p + m = 5

Now we substitute (i) in (ii) and clear p.

p + 0.2 (5-p) = 3

p-0.2p = 2

p = 2.5 pounds

Now we find m

m = 5 - 2.5

m = 2.5 pounds

b) The solution of the system is:

m = 2.5

p = 2.5

7 0
3 years ago
Tara is making spirit ribbons. she has 63 inches of blue ribbon on one spool and 56 inches of orange ribbon on another. if tara
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3 years ago
State the domain and range in set notation​
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Answer:

Image result for State the domain and range in set notation​

The domain is the set of all first elements of ordered pairs (x-coordinates). The range is the set of all second elements of ordered pairs (y-coordinates). Only the elements "used" by the relation or function constitute the range. Domain: all x-values that are to be used (independent values).

Step-by-step explanation:

7 0
4 years ago
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hjlf

Given :

The length of the rectangle, l = 8 cm/

The width of the rectangle, w = 75% of 8 cm

                                                 $= \frac{75}{100} \times 8$

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                                                 = 0.75 x 8

                                                 = 6

Therefore, the width of the rectangle is 6 cm.                                          

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