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hjlf
2 years ago
13

At a large university, data were collected on the number of sisters and brothers that each student had. Let the random variable

XX represent the number of sisters and the random variable YY represent the number of brothers. The distribution of XX has mean 1.00 and standard deviation 0.94. The distribution of YY has mean 1.07 and standard deviation 1.04. What is the mean of the distribution of X YX Y
Mathematics
1 answer:
il63 [147K]2 years ago
8 0

Answer:

2.07

Step-by-step explanation:

X mean = 1.00

Y mean = 1.07

X + Y = 1 + 1.07 = 2.07

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Arnav was 1.5 m tall. In the last couple of years, his height has increased by 20% percent.
BlackZzzverrR [31]

Answer: Arnav is 1.8m

Step-by-step explanation: I multiplied 1.5 by 0.20 and then added that answer to 1.5 and then I got 1.8

:D

5 0
2 years ago
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In general, the probability that it rains on Saturday is 25%. If it rains on Saturday, the probability that it rains on Sunday i
lora16 [44]

Answer:

40%

Step-by-step explanation:

From the given statements:

The probability that it rains on Saturday is 25%.

P(Sunday)=25%=0.25

Given that it rains on Saturday, the probability that it rains on Sunday is 50%.

P(Sunday|Saturday)=50%=0.5

Given that it does not rain on Saturday, the probability that it rains on Sunday is 25%.

P(Sunday|No Rain on Saturday)=25%=0.25

We are to determine the probability that it rained on Saturday given that it rained on Sunday, P(Saturday|Sunday).

P(No rain on Saturday)=1-P(Saturday)=1-0.25=0.75

Using Bayes Theorem for conditional probability:

P(Saturday|Sunday)=\frac{P(Sunday|Saturday)P(Saturday)}{P(Sunday|Saturday)P(Saturday)+P(Sunday|No Rain on Saturday)P(No Rain on Saturday)}

=\frac{0.5*0.25}{0.5*0.25+0.25*0.75}

=0.4

There is a 40% probability that it rained on Saturday given that it rains on Sunday.

5 0
2 years ago
An individual is hosting a cookout for the kick ball team. The individual wants to have two hot dogs for each guest, and 6 extra
hoa [83]

Answer:

Option 2) y = 26    

Step-by-step explanation:

We are given the following in the question:

The individual wants to have two hot dogs for each guest, and 6 extra hot logs in case some teammates bring friends.

Thus, the dependent variable is the number of hot dogs.

\text{y: Number of hot dogs}

The independent variable is the number of teammates.

\text{x: Number of teammates}}

Thus, the linear relation between the dependent and the independent variable is given as:

y(x) = 2x + 6

We have to find the value of dependent variable when independent variable is 10

For x = 10

y(10) = 2(10) + 6 = 26

Thus, the correct answer is

Option 2) y = 26

3 0
2 years ago
What is the slope-intercept equation for the line below? (0,1) (4,3)
const2013 [10]

The slope-intercept form:

y=mx+b

m - slope

b - y-intercept → (0, b)

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

We have the points (4, 3) and (0, 1) → b = 1.

Calculate the slope:

m=\dfrac{1-3}{0-4}=\dfrac{-2}{-4}=\dfrac{1}{2}

Answer: \boxed{D.\ y=\dfrac{1}{2}x+1}

3 0
2 years ago
On the first play of the game, the Wildcats gained 8 yd. What integer represents a gain of 8 yd?
vesna_86 [32]
The integer 8 represents a gain of 8 yards.
4 0
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