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3 years ago

Solve for n n +8,7 = 16,2 on=65 on=75 On=85 On = 24.9

Mathematics

1 answer:

Usimov [2.4K]3 years ago

7 0

Answer:

There is not enough to solve.

Step-by-step explanation:

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What is the standard deviation for 0,0,0,1,1,1,2,2,3,5?

Nadya [2.5K]

Standard Deviation, σ: 1.5
Count, N: 10
Sum, Σx: 15
Mean, μ: 1.5
Variance, σ2: 2.25

Steps

σ2 =
Σ(xi - μ)2
N
=
(0 - 1.5)2 + ... + (5 - 1.5)2
10
=
22.5
10
= 2.25
σ = √2.25
= 1.5

4 0

1 year ago

Read 2 more answers

Suppose a simple random sample of size n is drawn from a large population with mean mu and standard deviation sigma. The samplin

Sidana [21]

Answer:

$X \sim N(\mu,\sigma)$

Where $\mu$ the mean and $\sigma$ the deviation

Since the distribution for X is normal then we can conclude that the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

$\mu_{\bar X} = \mu$

$\sigma_{\bar X}= \frac{\sigma}{\sqrt{n}}$

Step-by-step explanation:

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".

Solution to the problem

Let X the random variable that represent the variable of interest of a population, and for this case we know the distribution for X is given by:

$X \sim N(\mu,\sigma)$

Where $\mu$ the mean and $\sigma$ the deviation

Since the distribution for X is normal then we can conclude that the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

$\mu_{\bar X} = \mu$

$\sigma_{\bar X}= \frac{\sigma}{\sqrt{n}}$

6 0

3 years ago

Read 2 more answers

Let μ denote the true average reaction time to a certain stimulus. For a z test of H0: μ = 5 versus Ha: μ > 5, determine the

hoa [83]

Answer:

0.0778, 0.1789,0.0250

Step-by-step explanation:

Given that μ denote the true average reaction time to a certain stimulus. For a z test of H0: μ = 5 versus Ha: μ > 5

(Right tailed test)

To find p value:

a) Z = 1.42: p = 0.077804

=0.0779

b) z = 0.92

p value = 0.1789

c)z= 1.96

p value = 0.0250

4 0

3 years ago

Label From least to greatest 1/2, 1/3, 1/,6, 4/9

Sholpan [36]

Answer:

1/6 4/9 1/3 1/2

Step-by-step explanation:

3 0

3 years ago

There are 25 students in the class. 10 students have sports practice after school. What is the ratio of students that do have pr

viktelen [127]

Answer:

2:3 is the answer

Step-by-step explanation:

No. of students those that do not practice = 25-10 = 15

So,

10:15 means 10 upon 15

we get 2 upon 3

means 2:3

plz mark brainliest thanks

3 0

2 years ago