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rosijanka [135]
2 years ago
10

The ages (in years) of the eight passengers on a bus are listed below.

Mathematics
1 answer:
Black_prince [1.1K]2 years ago
5 0
11 22 29 35 40 46 91

22 24.5 25.5 29

24.5 + 25.5 = 50

50/2 = 25

honestly i was confused because the amount of numbers is odd = 7 so i thought that the median would obviously be 35 since it’s inn the middle but it’s not one of the listen numbers

so i thinks it’s C
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Let X, the number of flaws on the surface of a randomly selected boiler of a certain type, have a Poisson distribution with para
kvasek [131]

Answer:

(a) 0.932

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(d) 0.316

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Step-by-step explanation:

From the table with mean parameter μ = 5, we can compute the following cumulative and density probability

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(b) P(X = 8) = 0.0653 (density)

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(d) P(5 \leq X \leq 8) = P(X \leq 8) - P(X \leq 5) = 0.932 - 0.616 = 0.316 (cumulative)

(e) P(5 < X < 8) = P(X \leq 8) - P(X \leq 5) - P(X = 8) = 0.932 - 0.616 - 0.0653 = 0.251

5 0
3 years ago
An IQ test is designed so that the mean is 100 and the standard deviation is 1414 for the population of normal adults. Find the
Amanda [17]

Answer:

37

Step-by-step explanation:

The first thing is to calculate critical z factor

the alpha and the critical z score for a confidence level of 90% is calculated as follows:

two sided alpha = (100% - 90%) / 200 = 0.05

critical z factor for two sided alpha of .05 is calculated as follows:

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critical z factor = 2.58

Now we have the following formula:

ME = z * (sd / sqrt (N) ^ (1/2))

where ME is the margin of error and is equal to 6, sd is the standard deviation which is 14 and the value of z is 2.58

N the sample size and we want to know it, replacing:

6 = 2.58 * (14 / (N) ^ (1/2))

solving for N we have:

N = (2.58 * 14/6) ^ 2

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5 0
3 years ago
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romanna [79]

Answer:

13

Step-by-step explanation:

First drop the line.

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How many units is it from Point r to the y axis?

5.

Now we can use the Pythagorean Theorem.

12^2+5^2=c^2 \\ \\ 144+25=c^2 \\ \\ c^2=169 \\ \\ c=13

4 0
3 years ago
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After a storm damages the community center, Shanika and her friends hold fundraising events to help pay for repairs. After the f
pantera1 [17]

Answer:

Step-by-step explanation:

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iris [78.8K]

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