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Sveta_85 [38]
3 years ago
5

The probability for event a is .4 the probability for event b is .2 The probability of events a and B is .1 why are the events a

re not independent
Mathematics
1 answer:
Alexus [3.1K]3 years ago
7 0

Answer:

becaudse theyu dont match

Step-by-step explanation:

i got it right

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Oliga [24]
Where are the choices
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3 years ago
A multiple-choice test contains 10 questions. There are four possible answers for each question. a) In how many ways can a stude
AnnZ [28]

Answer :

<h3>4^{10} <u> =1048576 ways </u> a student can answer the questions on the test if the student answers every question.</h3>

Step-by-step explanation:

Given that a multiple-choice test contains 10 questions and there are 4 possible answers for each question.

∴ Answers=4 options for each question.

<h3>To find how many ways  a student can answer the given questions on the test if the student answers every question :</h3>

Solving this by product rule

Product rule :

<u>If one event can occur in m ways and a second event occur in n ways, the number of ways of two events can occur in sequence is then m.n</u>

From the given the event of choosing the answer of each question having 4 options is given by

The 1st event of picking the answer of the 1st question=4 ,

2nd event of picking the answer of the 2nd question=4 ,

3rd event of picking the answer of the 3rd question=4

,....,

10th event of picking the answer of the 10th question=4.

It can be written as  by using the product rule

=4.4.4.4.4.4.4.4.4.4

=4^{10}

=1048576

<h3>∴ there are 1048576 ways a student can answer the questions on the test if the student answers every question.</h3>
3 0
3 years ago
Question from my math test
frutty [35]

Answer:

The manager skipped June

Step-by-step explanation:

In the first bar we can see the sales are from

January - February

Then,

March - April.

But then, the store manager goes from

May - July,

and totally skipped June, therefore making it look like the sales have increased.

4 0
3 years ago
The school that Stefan goes to is selling tickets to a choral performance. On the first day of ticket sales the school sold 3 se
m_a_m_a [10]

Answer:

senior citizen tickets are $10 and child tickets are $8

8 0
3 years ago
Read 2 more answers
8w-15=57 two step equations
insens350 [35]

Answer:

w=9

Step-by-step explanation:

Our equation is: 8w-15=57

Add 15 to both sides

-15 is now gone because we added 15 so it would be zero

and we have 72 because 15 plus 57 is 72

Now we have:

8w=72

Divide by 8 on both sides

8w cancels out to just w

and 72 divided by 8 is 9

And you're left with:

w=9

       

7 0
3 years ago
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