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3 years ago

5

What is the mode of the data represented in the dot plot?

2 answers:

Zarrin [17]3 years ago

4 0

Answer:

2

Step-by-step explanation:

mode is the number that occurs most frequently so I think it should be 2

fgiga [73]3 years ago

4 0

C is the answer ! Mark brainliest please <33!

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Please help I have 20 missing assignment T-T

Hunter-Best [27]

Answer:

Venus 170 million km

Mars 253 million km

Step-by-step explanation:

3 0

4 years ago

Read 2 more answers

Solar-heat installations successfully reduce the utility bill 60% of the time. What is the probability that at least 9/10 solar-

Wittaler [7]

Answer:

4.23% probability that at least 9/10 solar-heat installations are successful and will reduce the utility bill.

Step-by-step explanation:

For each installation, there are only two possible outcomes. Either it reduces the utility bill, or it does not. The probabilities for each installation reducing the utility bill are independent. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

In this problem we have that:

Solar-heat installations successfully reduce the utility bill 60% of the time, which means that $p = 0.6$

What is the probability that at least 9/10 solar-heat installations are successful and will reduce the utility bill?

This is $P(X \geq 9)$ when $n = 10$ . So

$P(X \geq 9) = P(X = 9) + P(X = 10)$

In which

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 9) = C_{10,9}.(0.6)^{9}.(0.4)^{1} = 0.0363$

$P(X = 10) = C_{10,10}.(0.6)^{10}.(0.4)^{0} = 0.0060$

So

$P(X \geq 9) = P(X = 9) + P(X = 10) = 0.0363 + 0.0060 = 0.0423$

4.23% probability that at least 9/10 solar-heat installations are successful and will reduce the utility bill.

3 0

3 years ago

How do I solve this question?

Alex787 [66]

∠TAC = ∠ABC (The angle between the chord and the tangent is equal to the angle in the alternate segment)

Since, EDCB is a cyclic quadrilateral,

∠CBD + ∠CED = 180 ----- I

- ∠CED + ∠AED = 180 -----II

----------------------------------------------------

∠ CBD = ∠AED

Hence proved

To learn more about circle geomtery, refer to brainly.com/question/24375372

#SPJ9

4 0

2 years ago

What is the slope of the line that passes through the points (9,-1) and (4,-11)

ValentinkaMS [17]

For some reason i got 95/36 my bad fam

7 0

3 years ago

g According to Major League Baseball rules, a baseball should weigh between 5 and 5.25 ounces and have a circumference of betwee

12345 [234]

Answer:

a) e probability that a randomly selected baseball has a weight greater than 5.14 ounces

=P(X>5.14) =(b-x)/(b-a) =(5.155-5.14)/(5.155-5.085)=0.2143

b)

probability that a randomly selected baseball has a circumference less than 9.03 inches

=P(X<9.03) =(x-a)/(b-a) =(9.03-9)/(9.1-9)=0.3

c) probability that a randomly selected baseball will have a weight between 5.11 and 5.13 ounces and a circumference between 9.04 and 9.06 inches

=((5.13-5.11)/(5.155-5.085))*((9.06-9.04)/(9.1-9.0))=0.0571

3 0

3 years ago