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wel
3 years ago
15

In the American justice system, a criminal is presumed innocent until proven guilty, meaning that the prosecution must gather en

ough evidence to prove that the defendant has actually committed a crime. Suppose a defendant is on trial for robbing a bank. The jury will hear the case and decide on a verdict of guilty or not guilty at the conclusion of the trial.
a. State the null and alternative hypotheses for the defendant. Just use words to describe the hypotheses - no statistical symbols are necessary.
b. Describe how a Type I error could occur during the trial.
c. Describe how a Type II error could occur during the trial.
d. Describe the two ways the correct decision could be made in the trial.
Mathematics
1 answer:
anastassius [24]3 years ago
7 0

Answer:

Step-by-step explanation:

Given that in the American justice system, a criminal is presumed innocent until proven guilty, meaning that the prosecution must gather enough evidence to prove that the defendant has actually committed a crime.

H0:  The defendent is not guilty

Ha: The defendent is guilty

(Two tailed test)

a) given above

b) Type I error here is false rejection of H0, i.e. charging defendent guilty even though actually he is not guilty

c) Type II error here is accepting that the defendent is not guilty even though he is guilty

d) Whenever type I increases type II error decreases and vice versa.

But as per ethics, an innocent person should not be punished at any cost, so care should be taken to avoid type I error which is more serious than avoiding type II error.

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a jar contains nickels and pennies. there are 56 coins in the jar in all. the total value of the coins is 1.52. how many pennies
nevsk [136]
1 penny is just 1c
one nickel is 5 pennies or 5c

alrite...

p = amount of pennies in the jar
n = amount of nickels in the jar

we know there are 56 coins in the jar, thus whatever "p" and "n" are,

p + n = 56

we also know, the total value of all pennies and nickels is one buck and 52 cents, or 1.52.. that's 152 pennies.

now, we know there are 5 pennies in one nickel, so in "n" nickels, there are 5*n pennies, or 5n, thus

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\bf \begin{cases}&#10;p+n=56\implies \boxed{n}=56-p\\&#10;p+5n=152\\&#10;----------\\&#10;p+5\left( \boxed{56-p} \right)=152&#10;\end{cases}

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3 years ago
Prove (x+y)^2=x^2+2xy+y^2
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3 years ago
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Answer: =13n+2y+1/4

Step-by-step explanation: Hope this help :D

Let simplify step by step

9n+1/4+6y+4n-4y

=9n+1/4+6y+4n-4y

combine like terms:

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