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Annette [7]
4 years ago
13

1. Determine whether or not each of the following is a Binomial random variable. If it is not a Binomial random variable, provid

e a short explanation. a) You roll a die 25 times. Let X be the number of times that you roll "3". b) The SJSU football team will play 12 games next season. They have a 70% chance of winning each conference game and a 60% chance of winning each nonconference game. Let X be the number of games the SJSU football team wins next season. c) Evelyn has a 75% chance of getting an A in each class she takes. Let X be the number of times Evelyn earns an A during four years at SJSU.
Mathematics
1 answer:
satela [25.4K]4 years ago
8 0

Answer:

a) You roll a die 25 times. Let X be the number of times that you roll "3".

* Is a Binomial

b) The SJSU football team will play 12 games next season. They have a 70% chance of winning each conference game and a 60% chance of winning each nonconference game. Let X be the number of games the SJSU football team wins next season.

* Not a Binomial because probability of success is not constant

c) Evelyn has a 75% chance of getting an A in each class she takes. Let X be the number of times Evelyn earns an A during four years at SJSU.

* Is a Binomial

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schepotkina [342]
L = 15m = 1500cm
b= 30cm
h= 4m= 400cm



So, total volume of the wall= l×b×h
= 1500×30×400= 1,80,00,000 cm^3


Now, volume of one brick= 22×12.5×7.5= 2062.5 cm^3


Volume of wall containing only bricks= total volume of the wall - volume of wall containing mortar
= 1,80,00,000 - (1,80,00,000 × 1/12)
= 1,65,00,000 cm^3


So, no. of bricks = volume of wall containing bricks ÷ volume of one brick
= 1,65,00,000 ÷ 2062.5
= 8000 bricks.
4 0
3 years ago
Esther wants to save $65.65 to buy her mother a special birthday gift. She has a weeks to save the
ICE Princess25 [194]

Answer:

$5.05

Step-by-step explanation:

So we know that Esther has to save 65.65 dollars in 13 weeks.

If we want to find out how much money she needs to save up each week then we have to divide 65.65 into 13 weeks ofc.

If we divide 65.65 by 13 we get 5.05 so 5 dollars and 5 cents.

If we check our answer to find out if this is the correct answer we can just multiply 13 by 5.05  and it will of course give you 65.65

<em>So, if Esther wants to save $65.65 in 13 weeks she will have to save up $5.05 each week.</em>

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3 years ago
A shipping company is packing a box with one cubic centimeter blocks. The box is 14 centimeters long, 12 centimeters wide, and 1
lutik1710 [3]

Answer:

Figure it out..

Step-by-step explanation:

Well, first you need to multiply 14 centimeters, 12 centimeters, and 16 centimeters, I think.

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3 years ago
Use the multiplier method to increase £88 by 14% You must show your working
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It be down or up 15% of your working times time
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3 years ago
Janey paid $200 of a $250 bill. What percent of the bill did she pay?
makvit [3.9K]
I'm pretty sure it's 80% because 10% of 250 is 25!
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So the answer is 80%! Hope this helped!
4 0
3 years ago
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