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liraira [26]
3 years ago
15

GET BRAINLIEST AND ALL MEH POINTS

Mathematics
2 answers:
OLga [1]3 years ago
7 0

To determine if a sum is reasonable you can round each number to the nearest whole and compare the estimated sum to the actual sum.

11111nata11111 [884]3 years ago
4 0

Answer: Look at the tenths place to round to the nearest whole number.

Compare the estimated sum to the actual sum.

The estimated answer is close to the actual answer.

Step-by-step explanation:

Sample respond :)

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he blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of 247.3 and a standard deviation of 6
Ulleksa [173]

Answer:

The approximate percentage of women with platelet counts within 3 standard deviations of the​ mean is 99.7%.

Step-by-step explanation:

We are given that the blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of 247.3 and a standard deviation of 60.7.

Let X = <em>t</em><u><em>he blood platelet counts of a group of women</em></u>

The z-score probability distribution for the normal distribution is given by;

                                Z  =  \frac{X-\mu}{\sigma}  ~ N(0,1)

where, \mu = population mean = 247.3

           \sigma = standard deviation = 60.7

Now, according to the empirical rule;

  • 68% of the data values lie within one standard deviation of the mean.
  • 95% of the data values lie within two standard deviations of the mean.
  • 99.7% of the data values lie within three standard deviations of the mean.

Since it is stated that we have to calculate the approximate percentage of women with platelet counts within 3 standard deviations of the​ mean, or between 65.2 and 429.4, i.e;

         z-score for 65.2 =  \frac{X-\mu}{\sigma}

                                     =  \frac{65.2-247.3}{60.7}  = -3

         z-score for 429.4 =  \frac{X-\mu}{\sigma}

                                       =  \frac{429.4-247.3}{60.7}  = 3

So, it means that the approximate percentage of women with platelet counts within 3 standard deviations of the​ mean is 99.7%.

4 0
3 years ago
57<br> 59°<br> A<br> 61<br> 670<br> В'<br> B<br> n<br> A<br> What is the measure of
nydimaria [60]

Answer:

??????????????????????????????????????

4 0
4 years ago
Read 2 more answers
150 divided by 11 fraction
Andrei [34K]

Answer:

as a mixed number: 13 7/11  as a percentage 1363.64%

Step-by-step explanation:

6 0
3 years ago
Answer to 1 and 2 pls!! will mark brainliest if u explain how u got it.
Ostrovityanka [42]

Answer:

ok so the answer to the first is 23. And how you get that is take 1 +7 and add them next you subtract 30 - 7 and get 23.

Step-by-step explanation:

The answer to 2 is 32. And how you get that is you can split 96 into 3 groops and when you do you will get 32 hope this helps.

6 0
3 years ago
32^{3x+5}=8^{x−1} I need help plz
Elena L [17]

Answer:

The value of x for the given expression is \dfrac{- 7}{3}

Step-by-step explanation:

Given as :

The expression is

(32)^{3 x + 5} = (8)^{ x - 1}

Now,

∵ (2)^{5} = 32

And  (2)^{3} = 8

So, (2^{5})^{3 x + 5} = (2^{3})^{x - 1}

Or, 2^{15 x + 25} =  2^{3 x - 3}

<u>Here , on both side base is 2 , so we remove common base 2</u>

∴ Equation can be written as

15 x + 25 = 3 x - 3

Or, 15 x - 3 x = - 25 - 3

Or, 12 x = - 28

∴  x = \dfrac{- 7}{3}

So, The value of x = \dfrac{- 7}{3}

Hence, The value of x for the given expression is \dfrac{- 7}{3} Answer

8 0
3 years ago
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