100 PONITS!!!!

2 answers:

7 0

Hello there.

<span>Which line is a graph of the equation 2x + 5y = 10?

Coordinate plane with the following lines graphed: Line A contains a slope of five-halves and y-intercept of 2; Line B contains a slope of negative five-halves and y-intercept of 2; Line C contains a slope of five-halves and y-intercept of negative 2; and Line D contains a slope of negative five-halves and y-intercept of negative 2.

</span><span>line b</span>

yuradex [85]3 years ago

7 0

The Answer Is Line B

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Consider two populations for which μ1 = 31, σ1 = 3, μ2 = 29, and σ2 = 2. Suppose that two independent random samples of sizes n1

DochEvi [55]

Answer:

Part (a): The mean of the distribution is 2.

Part (b): The standard deviation of the distribution is 1.525

Step-by-step explanation:

Consider the provided information.

Part (a) What is the mean of the distribution?

The mean of the sampling distribution of $(\bar x_1 -\bar x_2)$ is (µ₁ − µ₂).

It is given that μ₁ = 31, σ₁ = 3, μ₂ = 29, and σ₂ = 2.

Mean of distribution = (x₁ - x₂)

Mean of distribution = (31 - 29) = 2

Hence, the mean of the distribution is 2.

Part (b) What is the standard deviation of the distribution?

If the two samples are independent, the standard deviation of the sampling distribution is: $\sigma_{(x_1-x_2)}=\sqrt{\left(\dfrac{\sigma^2_1}{n_1}+\dfrac{\sigma^2_2}{n_2}\right)}}$