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mrs_skeptik [129]
3 years ago
13

A fair coin is used to simulate the gender of each child in a family with three children.

Mathematics
2 answers:
vlada-n [284]3 years ago
6 0

Answer:

Step-by-step explanation:

Let heads be the number of males

Let tails be the number of females.

There are 8 ways a family of 3 could be described.

H H H

H H T

H T H

H T T

T H H

T H T

T T H

T T T

So H T H means the oldest child is a male the middle child is a female and the youngest child is H which is a male.

Misha Larkins [42]3 years ago
5 0

50/50 chance for all 3 children

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Sharon bought 100/300/100 policy with a $100 deductible on collision and $100 deductible on comprehensive coverage.
Ronch [10]
The answer would be 1,928.85
8 0
3 years ago
Suppose in this semester, our Exam 1 average was about 86 with an SD of about 10. Suppose the correlation between our Exam 1 and
Oduvanchick [21]

Answer:

the slope of the regression equation for predicting our Exam 2 scores from Exam 1 scores is 0.492

And the y-intercept of the regression equation for predicting our Exam 2 scores from Exam 1 is 33.688

Step-by-step explanation:

Given the data in the question;  

mean X" = 86

SD σx = 10

Y" = 76

SD σy = 8.2

r = 0.6

Here, Exam 2 is dependent and Exam 1 is independent.

The Regression equation is

y - Y" = r × σy/σx  ( x - x" )

we substitute

y - 76 = 0.6 × 8.2/10  ( x - 86 )

y  - 76 = 0.492( x - 86 )

y  - 76 = 0.492x - 42.312

y = 0.492x - 42.312 + 76

y = 0.492x + 33.688

Hence, the slope of the regression equation for predicting our Exam 2 scores from Exam 1 scores is 0.492

And the y-intercept of the regression equation for predicting our Exam 2 scores from Exam 1 is 33.688

4 0
3 years ago
Need now
professor190 [17]

first is 134.24

second is 452.16

third is 904.32

fourth is 2612.48 ft3

fifth is 42.39

plz mark brainly have a great rest of ur day :D

3 0
3 years ago
Read 2 more answers
What is the probability that all three cards are face cards when you do not replace each card before selecting the next card rou
Ipatiy [6.2K]
Define three events A,B,C such that
A = first card is a face card
B = second card is a face card (assuming event A happens)
C = third card is a face card (assuming events A & B happen)
No replacements are made

There are 3 face cards (J, K, Q) per suit. There are 4 suits. In total, there are 3*4 = 12 face cards out of 52 total
P(A) = probability that event A happens
P(A) = 12/52
P(A) = 3/13

After event A happens, we have 12-1 = 11 face cards out of 52-1 = 51 total
P(B) = 11/51

After B happens, we have 11-1 = 10 face cards out of 51-1 = 50 left over
P(C) = 10/50
P(C) = 1/5

Based on how the events A,B,C are set up, we can form this equation
P(A and B and C) = P(A)*P(B)*P(C)
P(A and B and C) = (3/13)*(11/51)*(1/5)
P(A and B and C) = 11/1105
P(A and B and C) = 0.00995475113122

Rounded to the nearest tenth, the answer is simply 0.0 which is a lousy answer in my opinion because it implies that the answer is truly 0 instead of something really small. Though to be fair, the result is very close to 0. A much better approach is to round to the nearest hundredth to get 0.01; though I would ask your teacher for clarification and guidance.

note: a probability of 0 means that the event is impossible to happen, yet it is not impossible to pull out three face cards in a row. Is it unlikely? Yes. Because the result is roughly 0.00995 which is a really small decimal close to 0. But it's not 0 itself. 

6 0
3 years ago
video games six hours every weekend. he also plays 2 hours each day of the week. how many hours does mr.danie spend playing vide
Juliette [100K]

Answer:66 hours of video games in three weeks!

Step-by-step explanation:First you would multiply 6 by 2 because the weekend refers to Saturday and Sunday which are two days,when you multiply 6 by 2 you get 12.Next you would multiply 2 by 5 because the problem says  2 hours each day of the week,when you multiply 2 by 5 you get 10.Then you add 10 and 12 which gets you to 22.Last but not least you multiply 22 by 3 because the question says  how many hours does mr.danie spend playing video games over <em>3 weeks,</em>which bring you to 66!

I hope I helped!

4 0
3 years ago
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