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3 years ago

Please help me. My homework is due at 11:59

Mathematics

2 answers:

siniylev [52]3 years ago

8 0

The grocery store selling a 3 pound bag for $4.20. while the other store would sell it for $4.50.

muminat3 years ago

6 0

4.20/3= 1.4 and 3/2= 1.5 so basically 4.20 thingy

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Simplify the function

dusya [7]

Answer:

Step-by-step explanation:

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2 years ago

3n - n + 7 = 25<br><br>Help plz

WARRIOR [948]

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3 years ago

Bob bought 8 hockey tickets for $59. Adult tickets cost $10 each and child tickets cost $3 each. How many adult tickets and how

alexdok [17]

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Bob bought 5 Adult tickets and 3 Child

Step-by-step explanation:

5 adult tickets = 50$

3 Child tickets= 9$

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3 years ago

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The time to complete a standardized exam is approximately normal with a mean of 70 minutes & a standard deviation of 10 minu

Gennadij [26K]

if the mean is 70 minutes, then 90 minutes is 2 standard deviations above 70. if you look at the bell curve i drew, the percent of exams that took over 90 minutes is 2.5% <span>
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3 years ago

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Two athletic teams play a series of games; the first team to win 4 games is declared the overall winner. Suppose that one of the

kodGreya [7K]

Answer:

p=0.7103 (4-game series)
p=0.6480 (2-game series)

Step-by-step explanation:

Let X be the random variable equal the the first 4 straight wins. An overall win for the stronger team implies a negative binomial function with the parameters n=4, p=0.6:

$P(X=4)={{i-1}\choose {4-1}}0.6^40.4^{i-4},\ i=4,5,6,7$

#We find probabilities for the different values of i:

$P(X=4)={3\choose 3}0.6^4=0.1296\\\\P(X=5)={4\choose 3}0.6^40.4^1=0.2074\\\\P(X=6)={5\choose 3}0.6^40.4^2=0.2074\\\\P(X=4)={6\choose 3}0.6^40.4^3=0.1659$

Hence, probability of the stronger team winning overall is:

$=P(X=4)+P(X=5)+P(X=6)+P(X=7)\\\\=0.7103$

#Define Y as the random variable for winning 2/3 games.:

$P(Y=2)={1\choose 1}0.6^2=0.3600\\\\P(Y=3)={2\choose3}0.6^20.4=0.2880\\\\P(win)=0.2880+0.3600=0.6480$

Hence, probability of the stronger team winning in 2 out 3 game series is 0.6480

The stronger team has a higher chance of winning in a 4-game series(0.7103>0.6480)

8 0

2 years ago