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Lerok [7]
3 years ago
11

A survey showed that 72​% of adults need correction​ (eyeglasses, contacts,​ surgery, etc.) for their eyesight. If 18 adults are

randomly​ selected, find the probability that no more than 1 of them need correction for their eyesight. Is 1 a significantly low number of adults requiring eyesight​ correction?
Mathematics
1 answer:
luda_lava [24]3 years ago
5 0

Answer:

Step-by-step explanation:

Given that a  survey showed that 72​% of adults need correction​ (eyeglasses, contacts,​ surgery, etc.) for their eyesight

X - number of people who need correction for their eyesight

X is binomial since each event is independent and there are only two outcmes.

X (18, 0.72)

Required probability = the probability that no more than 1 of them need correction for their eyesight.

=P(X=0)+P(X=1)=0.00000296+0.000137

=0.00014

Yes 1 is a significantly low number as probability is almost zero.

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christy uses glass beads to make braclets and necklances it takes her 30 minutes to make a bracelet and 45 minites to make a nec
shtirl [24]

Christy should make at least 30 bracelets and at most 40 necklaces to maximize profit

<h3>How to determine how many bead of each type of bracelets and necklaces should Christy make to maximize his​ profit?</h3>

The given parameters can be represented in the following tabular form:

                       Bracelet (x)    Necklace (y)    Total              

Labor (hour)        0.5                       0.75         40

Profit                    10                         18

From the above table, we have the following:

Objective function:

Max P = 10x + 18y

Subject to:

0.5x + 0.75y <= 40

Because she wants to make at least 30 bracelets, we have:

x >= 30

So, we have:

Max P = 10x + 18y

Subject to:

0.5x + 0.75y <= 40

x >= 30

Express x >= 30 as equation

x = 30

Substitute x = 30 in 0.5x + 0.75y <= 40

0.5 * 30 + 0.75y <= 40

This gives

15 + 0.75y <= 40

Subtract 15 from both sides

0.75y <= 30

Divide by 0.75

y <= 40

Hence, Christy should make at least 30 bracelets and at most 40 necklaces to maximize profit

Read more about maximizing profits at:

brainly.com/question/13799721

#SPJ1

4 0
1 year ago
What is the probabilty of getting an odd number when choosing between 0 and 10?
LenaWriter [7]
The answer is C I think
7 0
2 years ago
At a water park, 4 out of 20 tickets sold were child tickets. What percentage of the tickets were child tickets?
jeyben [28]

Answer:

20%

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Solve for x.<br> Your answer must be simplified. −30&lt; x/-4
kumpel [21]

Answer:

x<120 i think

7 0
3 years ago
Read 2 more answers
What is the value of this expression?<br><br> (−4) to the fourth power
Alex_Xolod [135]
Good afternoon/evening.

-4^4 = four to the fourth power = (-4)(-4)(-4)(-4) = 256
Remember, when a negative is multiplied by a negative it equals a positive. 
4 0
3 years ago
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