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kaheart [24]
3 years ago
8

If n(A)=26, n(B)=41, and n(A ∩ B)=8, find n(A ∪ B).

Mathematics
1 answer:
miskamm [114]3 years ago
8 0

n (AUB) = 59

Step-by-step explanation:

n(A U B) = n(A) + n(B) -n(A intersection B)

= 26+ 41- 8

= 59

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The nicotine content in a single cigarette of a particular brand has a distribution with mean 0.9 mg and standard deviation 0.1
Ad libitum [116K]

Answer:

The answer to the question is;

The probability that the resulting sample mean of nicotine content will be less than 0.89 is 0.1587 or 15.87 %.

Step-by-step explanation:

The mean of the distribution = 0.9 mg

The standard deviation of the sample = 0.1 mg

The size of the sample = 100

The mean of he sample = 0.89

The z score for sample mean is given by

Z =\frac{X-\mu}{\sigma/ \sqrt{n} } where

X = Mean of the sample

μ = Mean of the population

σ = Standard deviation of the population

Therefore Z = \frac{0.89-0.90}{0.1/\sqrt{100} } = -1

From the standard probabilities table we have the probability for  a z value of -1.0 = 0.1587

Therefore the probability that the resulting sample mean will be less than 0.89 = 0.1587 That is the probability that the mean is will be less than 0.89 is 15.87 % probability.

             

7 0
3 years ago
A total of 123 fifth-grade students are going to ford Verde state historic park each bus holds 38 students all of the buses are
FromTheMoon [43]

Hi Lala4eva54,

Your Question:

A total of 123 fifth-grade students are going to ford Verde state historic park each bus holds 38 students all of the buses are full Except one how many students will be in the bus that is not feel.

Solution:

123 / 38 = 3.236.....

38 x 3 = 114

123 - 114 = 9

Answer:

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4 0
3 years ago
Someone help me please, i will give brainliest this is due soooooon!1111
Darya [45]

Answer:

216

Step-by-step explanation:

I'm sure there is a simpler way to do this but this is how I did it.

First divide 18 by 6 because it triples every 6 hours.

18/6=3

This means it will triple three times

Then triple the value three times

#1. 8x3=24

#2. 24x3=72

#3. 72x3=216

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2 years ago
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Oksanka [162]

Answer: 19/7 ,3.14, 3.2

Step-by-step explanation: Hope this helps Have a brilliant day of learning!

7 0
2 years ago
I need help with my math homework
adoni [48]

Answer:

96.52 centimeters

Step-by-step explanation:

1 inch is equal to 2.54 centimeters

38 inches = 38*2.54 cm

38 * 2.54 = 96.52

The answer is 96.52 centimeters

Hope this helps :)

Have a great day

8 0
2 years ago
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