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Lady bird [3.3K]
2 years ago
6

From 1975 to 1986, the general social survey asked its participants if they favored or opposed capital punishment. A least squar

es regression line was calculated to predict the percent that favored the death penalty based on the year. The least squares regression equation is yhat= -1859+0. 9753x. Interpret the slope for this equation.
SAT
1 answer:
snow_tiger [21]2 years ago
5 0

Based on the information given, it should be noted that the slope cannot be interpreted as the equation makes no sense for the model.

<h3>Interpretation of the slope.</h3>

From the information given, the explanatory variable x was the year that the observations were taken.

In this case, the values are the integer number between 1975 and 1986. The y-intercept of the equation makes no sense for the prediction as it's not in the range of the explanatory data.

Learn more about models on:

brainly.com/question/3493733

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2 years ago
Frank, who lives in texas, and his sister lilly, who lives in japan, correspond regularly. From what he can tell from the postma
ehidna [41]

Answer:

(A) There is convincing evidence that there is no difference in the mean delivery times.

(B) There is convincing evidence that there is a difference in the mean delivery times.

(C) There is convincing evidence that the mean delivery time from Japan to Texas is greater than the mean delivery time from Texas to Japan.

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(E) The t-test cannot be used for sample sizes that are this small.

Explanation:

The correct option is;

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Step-by-step explanation:

Here we have the formula for the two-sample t-test given s;

 

To Texas N₁ = 12,   =8.74 σ₁ = 2.92 SE Mean₁ = 0.84

To Japan N₂ = 9   = 6.75 σ₂ = 2.56 SE Mean₁ = 0.85

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Where the null hypothesis is

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