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3 years ago

What is the smallest number? 1/6, - 1/3, - 5/7, -3/6

Mathematics

1 answer:

kogti [31]3 years ago

6 0

Answer:

-1/3 is the smallest answer

Step-by-step explanation:

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In answering on a multiple choice test, a student either know the answer or guesses. Let p be the probability that the students

LenaWriter [7]

Answer:

$P(A_{1}|B ) =\frac{mp}{1+p(m-1)}$

Step-by-step explanation:

For mutually exclusive events as A1, A2, A3, etc, Bayes' theorem states:

$P(A|B)= \frac{P(B|A)P(A)}{P(B)}$

P(A|B) is a conditional probability: the likelihood of event A occurring given that B is true.

P(B|A) is a conditional probability: the likelihood of event B occurring given that A is true.

P(A) is the probability that A occurs

P(B) is the probability that B occurs

For this problem:

A1 is the probability that the student knows the answer

A2 is the probability that the student guesses the answer

B is the probability that the student answer correctly

$P(A_{1})=p \\P(A_{2})=1-p \\P(B|A_{1})=1 \\P(B|A_{2})=\frac{1}{m} \\P(B)= P(A_{1})P(B|A_{1}) + P(A_{2})P(B|A_{2})= p+\frac{1-p}{m} \\$

P(B|A₁) means the probability that the answer is correct when he knew the answer

P(B|A₂) means the probability that the answer is correct when he guessed the answer

P(A₁|B) means the probability that he knew the answer when the answer was correct

Replacing everything in the Bayes' theorem you get:

$P(A_{1}|B)= \frac{P(B|A_{1})P(A_{1})}{P(B)}=\frac{(1)(p)}{p+\frac{1-p}{m}} =\frac{mp}{mp+1-p} =\frac{mp}{1+p(m-1)}$

5 0

3 years ago

What is the probability of 3c5

frosja888 [35]

Answer:

Step-by-step explanation:

The question is wrong it should be 5C3

5C3=5!/((5-3)!•3!)=5!/(2!•3!)

=(5•4•3•2•1)/(2•1•3•2•1)

=10

3 0

3 years ago

Hello! Can someone please help me with these 2 questions! thank you so much! (i’ll give brainlist)

ra1l [238]

Answer:

1) 4 2)1/5 X=10

Step-by-step explanation:

Small to large is a fraction

Large to small is a whole number

3 0

2 years ago

What’s the value of 5 of 467.3985

kvasek [131]

Answer:

1/50000

Step-by-step explanation:

1/50000 is the value of 5

4 0

2 years ago

Read 2 more answers

Solve for x x- 2x (12 - 1/2) =2 (4-2x) +20 A.-14/9 B.-9/14 C.14/9 D.9/14

MrMuchimi

Answer:

Step-by-step explanation:

-22x=-4x+28

-18x=28

x=-28/18=-14/9

7 0

2 years ago