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Mekhanik [1.2K]

2 years ago

6

WILL GIVE BRAINLIEST DUE NOW!!!!!! Which activities best support development of cardiorespiratory fitness? (5 points) a Push-ups

and pull-ups b Toe touches and neck rolls c Aerobics and jumping rope d Dumbbell curls and shoulder stretch

1 answer:

Ilia_Sergeevich [38]2 years ago

7 0

Answer:

c Aerobics and jumping rope

Thank you and please rate me as brainliest as it will help me to level up

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According to a recent survey, the population distribution of number of years of education for self-employed individuals in a c

creativ13 [48]

Answer:

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c) Sample mean = 13.5, Sample standard deviation = 0.2

d) Decrease the sample standard deviation

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We are given the following in the question:

Mean, μ = 13.5 years

Standard deviation,σ = 2.8 years

a) random variable X

X: number of years of education

Central limit theorem:

If large random samples are drawn from population with mean $\mu$ and standard deviation $\sigma$ , then the distribution of sample mean will be normally distributed with mean $\mu$ and standard deviation $\frac{\sigma}{\sqrt{n}}$

b) mean and the standard for a random sample of size 49

$\mu_{\bar{x}} = \mu = 13.5\\\\\sigma_{\bar{x}} = \dfrac{\sigma}{\sqrt{n}} = \dfrac{2.8}{\sqrt{49}} = 0.4$

c) mean and the standard for a random sample of size 196

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d) Effect of increasing n

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