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morpeh [17]
3 years ago
14

According to data from the state blood program, 40 percent of all individuals have group A blood. Suppose that of six randomly s

elected individuals, three have group A blood. Would you believe the data from the blood program?a) Yes, probability is <.05 b) Yes, probability is > 05c) No
Mathematics
1 answer:
Svet_ta [14]3 years ago
8 0

Answer:

b. Yes, probability is > 0.05

Step-by-step explanation:

We have to find P(X=3) and if the probability is below 0.05 then the it would be unusual and if it isn't below 0.05 we believe that the data from the blood program.

This probability can be found bu binomial distribution  with parameters  n=6

and p=0.4.

P(X=x)=nCx(p^x)(q^n-x)

where q=1-p=1-0.4=0.6.

P(X=3)=6C3(0.4^3)(0.6^3)

P(X=3)=20(0.064)(0.216)

P(X=3)=0.27648

As the probability that the three have a blood group is greater than 0.05, so,  we believe that the data from the blood program.

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Sudhir bought an almirah for RS 13600 and spent RS 400 on its transportation . He sold it for RS 16800 . find the his gain perce
oee [108]

Answer:

His gain percent is 20%

Step-by-step explanation:

In this question, we want to find the percentage gain of the business.

We need the following parameters;

The cost price which is the sum of the amount she bought the goods + the amount spent on transport

Using the values we have in the question;

The cost price will be;

13,600 + 400 = Rs 14,000

The selling price = Rs 16,800

Mathematically the percentage gain will be;

% gain = (selling price- cost price)/selling price * 100%

% gain = (16,800-14,000)/14,000 * 100/1

% gain = 2800/14,000 * 100/1 = 1/5 * 100/1 = 20%

7 0
3 years ago
you are assembling desserts with a friend together you can make 12 desserts in 5 minutes. how many can you make in 20 minutes?
Sever21 [200]
You can solve this in two ways.

First way:
Let’s find out how many my friend makes in one minute.
12/5=2.4
He makes 2.4 in one minute. Let’s multiply that by 20 to find what he makes in 20 minutes.
2.4•20=48
My friend made 48 desserts.

Second way:
Let’s make a ratio.
12 desserts:5 minutes
X desserts: 20 minutes
Whatever you do to one side, you have to do to the other. Since you are multiplying the minutes by 4, you have to multiply the desserts by 4.
12•4=48

So, my friend made 48 desserts.
Tell me if this helps!!!
3 0
3 years ago
List three tools and equipment needed for baking​
vivado [14]

Answer:

oven, whisk, pan

Step-by-step explanation:

6 0
3 years ago
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During the month of February, Fabulous Feet Shoe Mart sold 30 pairs of red loafers. After an ad campaign to boost sales, they so
blagie [28]
20%

20% of 30 =6
30+6 = 36

6 0
3 years ago
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Find the value of z.<br> PLEASE HELP ASAP!<br> A. 25.25<br> B. 51<br> C. 129<br> D. 76.25
kirza4 [7]

Use Picture Math, i cant type in the other cause brainly doesn't accept it but it is Ga_thMath. (u)

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