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3 years ago

What is the probability of obtaining a sample mean of 53 or less from a sample of 50?

1 answer:

8 0

Sampling errorThe natural discrepancy, or amount of error, between a sample statistic and its corresponding population parameter.distribution of sample meansThe collection of sample means for all of the possible random samples of a particular size (n) that can be obtained from a population.sampling distributionA distribution of statistics obtained by selecting all of the possible samples of a specific size from a population.central limit theoremFor any population with mean μ and standard deviation σ, the distribution of sample means for sample size n will have a mean of μ and a standard deviation of σ/√n and will approach a normal distribution as n approaches infinity.expected value of MThe mean of the distribution of sample means is equal to the mean of the population of scores, μ, and is called this.standard error of MThe standard deviation for the distribution of sample means. Identified by the symbol σ˯M. This standard error provides a measure of how much distance is expected on average between a sample mean (M) and the population mean (μ).law of large numbersStates that the larger the sample size (n), the more probable it is that the sample mean is close to the population mean.

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vesna_86 [32]

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2 years ago

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Which function is undefined for x = 0? y=3√x-2 y=√x-2 y=3√x+2 y=√x=2

Mkey [24]

For this case, we have to:

By definition, we know:

The domain of $f (x) = \sqrt [3] {x}$ is given by all real numbers.

Adding or removing numbers to the variable within the root implies a translation of the function vertically or horizontally. In the same way, its domain will be given by the real numbers, independently of the sign of the term inside the root. Thus, it will always be defined.

So, we have:

$y = \sqrt [3] {x-2}$ with $x = 0$ : $y = \sqrt [3] {- 2}$ is defined.

$y = \sqrt [3] {x+2}$ with $x = 0:\ y = \sqrt [3] {2}$ is also defined.

$f (x) = \sqrt {x}$ has a domain from 0 to ∞.

Adding or removing numbers to the variable within the root implies a translation of the function vertically or horizontally. For it to be defined, the term within the root must be positive.

Thus, we observe that:

$y = \sqrt {x-2}$ is not defined, the term inside the root is negative when $x = 0$ .

While $y = \sqrt {x+2}$ if it is defined for $x = 0$ .

Answer:

$y = \sqrt {x-2}$

Option b

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3 years ago

The line that contains a slope of 1/2 and passes through the point (-2, -3) in standard form

mash [69]

Write the equation of the line that satisfies the given conditions, Express the final equation in standard form. Contains the point (2,5) and is parallel to the line x-2y=-5
The given equation can be written 2y=x+5; y = (1/2)x+(5/2)
It's slope is 1/2

So any line parallel to it has slope = 1/2
If the line also passes thru (2,5), 5 = (1/2)2+b; b=4
Therefore the equation you want is y = (1/2)x+4

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2 years ago

Determine the volume of the toilet paper roll excluding the empty middle

lora16 [44]

Answer:

150.72

Step-by-step explanation:

3² × 3.14 × 6 - 1² × 3.14 × 6 = (3² - 1²) × 3.14 × 6 = 150.72

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2 years ago

330,000 write using Scientific Notation.

Greeley [361]

$330,000=3.3*100,000=3.3*10^{5}$

the first number must be between 1 and 10 (here is 3.3)
the power (here is 5) is an integer exponent of 10 that indicates how many places the decimal point must be moved to make equation true

Greetings,
n00nst00p :)

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2 years ago

Read 2 more answers

What is the probability of obtaining a sample mean of 53 or less from a sample of 50​?

What is the probability of obtaining a sample mean of 53 or less from a sample of 50?