nathangirnet

03.11.2019 • 

Mathematics

When buying a candy bar, there is a 20% chance that it will also include a coupon for a second candy bar. a student
wants to determine the probability that, if she buys 7 candy bars, more than 2 will include a coupon.

to do this, she uses a random number table to pick 7 numbers from 1 to 5. she lets 1 represent a candy bar with a
coupon and numbers 2 through 5 represent a candy bar without a coupon.. she repeats this for a total of 16 trials. theresults are shown in the table.
5144543 2114445 2113415 4341112
3423143 3435251 1324353 3223233
2155545 4222542 4443352 535
1455141 4554414 5154443 3153242

select from the drop-down menus to correctly complete each statement

to estimate the probability that more than 2 out of 7 candy bars will include a coupon, the student must count the numberof trials with choose and divide by the number of trials.

this gives an estimated probability of about choose

Ответ:

mariakelley15

08.01.2022

Mathematics

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To estimate the probability that more than 2 out of 7 candy bars will include a coupon, the student must count the number of trials with more than two 1's. and divide by the number of trials. This gives an estimated probability of about 0.1875.Step-by-step explanation:

1 represent a candy bar with a  coupon and numbers 2 through 5 represent a candy bar without a coupon.

Now we are asked to find the probability that, if she buys 7 candy bars, more than 2 will include a coupon.

Total number of outcomes=16

Number of favorable outcomes(i.e. the outcome which have more than 2 one) = 3

( Since the outcomes are:  2113415 4341112   1455141 )

Hence, the probability is the ratio of Number of favorable outcomes to the total number of outcomes.

i.e.  

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Ответ:

rocksquad7917

06.10.2022

Mathematics

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fg(x)=f(10x²+5)=(10x²+5)/5+3=10x²/5+5/5+5

=2x²+1+5=2x²+6

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