3 years ago

How to do math in summer school

Mathematics

1 answer:

Vladimir79 [104]3 years ago

5 0

Answer:

google

Step-by-step explanation:

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Alenkasestr [34]

Part 1: Similarities of sine and cosine graphs are that both has an amplitude of 1 and a period of 2pi.
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The required cosine graph is <span>f(x) = 3 cos(4x - 3π/2) + 4</span>

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What is 7.125 simplified as a fraction?

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Step-by-step explanation:

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2 years ago

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Pulse rates of women are normally distributed with a mean of 77.5 beats per minute and a standard deviation of 11.6 beats per mi

miss Akunina [59]

Answer:

Mean = 0, Standard deviation = 1

Step-by-step explanation:

We are given the following in the question:

Mean, μ = 77.5 beats per minute

Standard Deviation, σ = 11.6 beats per minute

We are given that the distribution of pulse rates of women is a bell shaped distribution that is a normal distribution.

Formula:

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

Putting the values, we get,

$z_{score} = \displaystyle\frac{x-77.5}{11.6}$

After, the standardization, that is conversion of all pulse rates of women to z scores, the mean of the distribution is 0 and standard deviation is 1.

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