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3 years ago

I need help! Quick Please

Mathematics

1 answer:

Ipatiy [6.2K]3 years ago

6 0

What do u need help on? It gives u the answer which is X=10/3

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What's the product of 3 2/3 and 14 2/5 ?<br> A. 52 4/5<br> B. 52 4/15<br> C. 54<br> D. 42 4/5

wlad13 [49]

Answer:

52 4/5

Have a nice day! :)

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3 years ago

Which relation is a function?

Fudgin [204]

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2 years ago

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What number is in the hundredths place?

Lerok [7]

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3 years ago

The lunch lady has 12 pounds of lasagna left over.

bogdanovich [222]

Answer:

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3 years ago

A survey showed that 77% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. If 22 adults are

Sveta_85 [38]

Answer:

The probability that no more than more than 11 of them need correction for their eyesight is 0.00512

No, 11 is not a significantly low low number of adults requiring eyesight correction .

Step-by-step explanation:

A survey showed that 77% of adults need correction for their eyesight.

If 22 adults are randomly selected, find the probability that no more than more than 11 of them need correction for their eyesight.

n =22

p = 0.77

q = 1-p = 1- 0.77=0.23

We are supposed to find $P(x\leq 11)$

$P(x\leq 11)=P(x=1)+P(x=2)+P(x=3)+.....+P(x=11)$

Formula : $P(x=r)=^nC_r p^r q^{n-r}$

$P(x\leq 11)=^{22}C_1 (0.77)^1 (0.23)^{22-1}+^{22}C_2 (0.77)^2 (0.23)^{22-2}+^{22}C_3 (0.77)^1 (0.23)^{22-3}+.....+^{22}C_{11} (0.77)^1 (0.23)^{22-11}$

Using calculator

$P(x\leq 11)=0.00512$

So, The probability that no more than more than 11 of them need correction for their eyesight is 0.00512

No, 11 is not a significantly low low number of adults requiring eyesight correction .

3 0

3 years ago