3 years ago

Help again 14 more questions

Mathematics

1 answer:

MArishka [77]3 years ago

5 0

Answer:

A certain element has 25 protons.

Step-by-step explanation:

Please mark brainliest

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Intravenous fluid bags are filled by an automated filling machine. Assume that the fill volumes of the bags are independent, nor

kenny6666 [7]

Answer:

a) 0.0167

b) 0

c) 5.948

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 6.16 ounces

Standard Deviation, σ = 0.08 ounces

We are given that the distribution of fill volumes of bags is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) Standard deviation of 23 bags

$\displaystyle\frac{S.D}{\sqrt{23}} = \frac{0.08}{\sqrt{23}} = 0.0167$

b) P( fill volume of 23 bags is below 5.95 ounces)

P(x < 5.95)

$P( x < 5.96) = P( z < \displaystyle\frac{5.95 - 6.16}{0.0167}) = P(z < -12.57)$

$= 1 - P(z < 12.57)$

Calculation the value from standard normal z table, we have,

$P(x < 5.95) = 1 - 1 = 0$

c) P( fill volume of 23 bags is below 6 ounces) = 0.001

P(x < 6) = 0.001

$P( x < 6) = P( z < \displaystyle\frac{6 - \mu}{0.0167})$

Calculation the value from standard normal z table, we have,

$P( z \leq -3.09) = 0.001$

$\displaystyle\frac{6 - \mu}{0.0167} = -3.09\\\\\mu = 6 + (0.0167\times -3.09) = 5.948$

If the mean will be 5.948 then the probability that the average of 23 bags is below 6.1 ounces is 0.001.

7 0

3 years ago

Joy earns $90.00 a month babysitting. She saves 15% of the money and is able to spend the rest. How much money does she save a m

alisha [4.7K]

You have 90 and you have 15%

so you have to subtract 90 and 15%

90-15%=76.5

she puts $13.50 in savings and is able to spend $76.5

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3 years ago

The ratio of the side length of a square perimeter is always 1 to 4 peter drew a sqaure with a perimeter of 28 inches

Nataly_w [17]

Answer: 32 is the answer

Step-by-step explanation:

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3 years ago

Which expression represents a difference of squares? A. 4x2 − 16x B. t2 + 100 C. 25k − 64 D. 81 − 49y2

LuckyWell [14K]

Answer:

I believe it would be C, not 100% sure though

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3 years ago

Which graph represents the function? g(x)={x if x<2−3 if x≥2

Pepsi [2]

$g(x)=\left\{\begin{array}{ccc}x&if&x$

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3 years ago

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