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3 years ago

What can you tell about the mean of eachdistribution

Mathematics

1 answer:

erik [133]3 years ago

7 0

Answer:

In a discrete probability distribution of a random variable X, the mean is equal to the sum over every possible value weighted by the probability of that value; that is, it is computed by taking the product of each possible value x of X and its probability p(x), and then adding all these products together, giving. .

Step-by-step explanation:

I really hope this helps have a wonderful day

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If the ratio number of small dogs to the number of large dogs at the animal shelter is 9 to 5, which of the following is the pos

nikklg [1K]

Answer:

Step-by-step explanation:

it's the only one were you can multiply and get the first number and the second number a multiple of the ratio 9:5

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2 years ago

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A 15 ft. telephone pole has a wire that extends from the top of the pole to the ground. The wire and the ground form a 42° angle

Lorico [155]

Answer:

Correct choice is A

Step-by-step explanation:

Consider right triangle ABC formed by the telephone pole (side AB) and ground (side BC). In this triangle AC is the length of the wire, BC is the distance from the base of the pole to the spot where the wire touches the ground and AB=15 ft, ∠ACB=42°.

Then

$\sin 42^{\circ}=\dfrac{AB}{AC}\Rightarrow AC=\dfrac{AB}{\sin 42^{\circ}}=\dfrac{15}{\sin 42^{\circ}}\approx 22.4\ ft.$
$\tan 42^{\circ}=\dfrac{AB}{BC}\Rightarrow BC=\dfrac{AB}{\tan 42^{\circ}}=\dfrac{15}{\sin 42^{\circ}}\approx 16.7\ ft.$

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3 years ago

What irrational number is between 6 and 7

Alexxandr [17]

Answer:

2pi?

Step-by-step explanation:

Pi is an irrational number so I guess double of pi would be irrational too.

2pi would be something like 6.28318531...

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3 years ago

How do you do one-step equations?

strojnjashka [21]

An example of a one step equation would be 5+5=10
But equations with more than one step would be like: find the sum of 5+5 and then find 50% of the sum of 5+5

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3 years ago

Sin2x=______

joja [24]

Answer:

A.2sinxcosx

Step-by-step explanation:

We know the trig identity

Sin (2a) = 2 sin a cos a

sin (2x) = 2 sin x cos x

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