Question

The spinner below is divided into 16 equally spaced sections. if the spinner is spun 20 times, what is the probability of getting a perfect square exactly seven times? (30 points since i need it now)

Answer 1

Answer:

11.24%

Step-by-step explanation:

1,4,9,16 are the only perfect square numbers in the 16 number wheel so it would be . 20C7*1/4^7*3/4^13

-20 is the numbers of times spun

-7 is the number we are looking for

-1/4 is 4/16 which is the number of perfect squares

-3/4 is 12/16 which is the numbers of non perfect squares

-^7 is the number we are looking for

-^13 is 20-7

Answer 2

The probability of getting a perfect square exactly seven times 11.24%

What is probability?

The extent to which an event is likely to occur, measured by the ratio of the favourable cases to the whole number of cases possible.

1,4,9,16 are the only perfect square numbers in the 16 number wheel so

it would be

.$=^{20}C_7 \times \dfrac{1}{4^7}\times \dfrac{3}{4^{13}}$

$= 11.24\%$

Hence probability of getting a perfect square exactly seven times 11.24%

To know more about probability follow

https://brainly.com/question/24756209

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