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tekilochka [14]
3 years ago
12

MARKIN BRAINIEST !!!!

Mathematics
1 answer:
Tom [10]3 years ago
3 0

Answer:

B

Step-by-step explanation:

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Which of the following numbers is closest to 1?
Mademuasel [1]
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3 years ago
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Researchers at a pharmaceutical company have found that the effective time duration of a safe dosage of pain relief drug is norm
FrozenT [24]

Answer:

a) P(1

b) P(X

Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

2) Part a

Let X the random variable that represent the duration of a safe dosage of pain relief drug, and for this case we know the distribution for X is given by:

X \sim N(1.5,0.8)  

Where \mu=1.5 and \sigma=0.8

We are interested on this probability

P(1

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(1

And we can find this probability on this way:

P(-0.625

And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.  

P(-0.625

3) Part b

We are interested on this probability

P(X

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X

And we can find this probability on this way:

P(z

6 0
3 years ago
Use 2 unit multipliers to convert 4 square feet to square inches
allochka39001 [22]

Answer:

4 square feet is equal 576 square inches

Step-by-step explanation:

to convert 4 square feet to square inches

Now, We know that 1 feet = 12 inches

∴ 1^{2} \ feet = 12^2 \ inches\\1\ square\ feet= 144 \ square \ inches\\

Now we need to find  4 square feet

4 \times 1\ square\ feet=  4\times 144 \ square \ inches\\4 \ square\ feet=  576 \ square \ inches

5 0
3 years ago
I NEED HELP PLEASE !!!!
Vinvika [58]

Answer:

6

Step-by-step explanation:

7 0
3 years ago
2y-2=3/2y. 10x-4=5x
GREYUIT [131]
2y-1.5y=2
0.5y=2
y=1
10x-5x=4
x=4/5
8 0
3 years ago
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