24/514.8 I really need help on this question please help me I'm begging thanks :)

Mathematics

1 answer:

Katarina [22]2 years ago

4 0

Answer:

the answer is .04634994206

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28 cookies out of 40 cookies are chocolate chip. What percent of the cookies are chocolate chip?

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Answer:

I’m pretty sure the answer would be 64%

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A study conducted at a certain college shows that 65% of the school's graduates find a job in their chosen field within a year

alexdok [17]

Answer: 0.009

Step-by-step explanation:

Formula we use here : Binomial distribution formula

Probability of getting success sin x trial = $P(X)=^nC_xp^x(1-p)^{n-x}$ , where n is the sample size and p is the probability of success in each trial .

Given : A study conducted at a certain college shows that 65% of the school's graduates find a job in their chosen field within a year after graduation.

i.e. p= 0.65

Sample size : n= 11

Now, the probability that 11 randomly selected graduates all find jobs in their chosen field within a year of graduating:-

$P(X)=^{11}C_{11}(0.65)^{11}(1-0.65)^{11-11}\\\\=(1)(0.65)^{11}(1)\\\\=0.00875078317401\approx0.009$

Hence, the probability that 11 randomly selected graduates all find jobs in their chosen field within a year of graduating = 0.009

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3 years ago

A restaurant bill is $84.96. Estimate a 20% tip. Estimate a 15% tip.

Lisa [10]

If you have to estimate I will put $85 and then to find 20 % you just have to kniw that 10% is equal to 8.5 you just move a decimal then you just add 8.5 plus 8.5 = 17 so 20% of 85 is equal to $17 and to find 15% you already know how much is 10%=8.5 so you just need to find 5% that is equal to 4.25 and then you just add 4.25 to 8.5 and that's equal to 12.75

20%= 17
15%=12.5

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Ok..ur adding 5 each time to get the next term
so the next 4 terms are : 13, 18, 23, 28

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