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MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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An article regarding interracial dating and marriage recently appeared in a newspaper. Of the 1708 randomly selected adults, 314 identified themselves as Latinos, 322 identified themselves as blacks, 253 identified themselves as Asians, and 775 identified themselves as whites. Among Asians, 79% would welcome a white person into their families, 71% would welcome a Latino, and 66% would welcome a black person.
NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is

Transcribed Image Text:For any intervals that do not overlap, in words, what does this imply about the significance of the differences in the true proportions?
Intervals that do not overlap do not give any indication about the difference of the true population proportion.
The intervals for black and white do not overlap, which means that there is no significant difference in their population proportions.
There are no intervals that do not overlap, implying that there is not a significant difference in their population proportions.
O The intervals for black and white do not overlap, which means that there is a significant difference in their population proportions.

Transcribed Image Text:O Part (a)
Construct the 95% confidence intervals for the three Asian responses. (Round your answers to four decimal places.)
welcome a white person
welcome a Latino
welcome a black person
O Part (b)
Even though the three point estimates are different, do any of the confidence intervals overlap? Which? (Select all that apply.)
No confidence intervals overlap.
Yes, the intervals for Latinos and blacks overlap.
Yes, the intervals for whites and blacks overlap.
Yes, the intervals for whites and Latinos overlap.
Yes, all three intervals overlap.
O Part (c)
For any intervals that do overlap, in words, what does this imply about the significance of the differences in the true proportions?
O The confidence intervals for black and Latino overlap, and the overlapping region contains the black and Latino sample proportions; therefore, there is no evidence of a significant difference between their true proportions.
The confidence intervals for white and Latino overlap, but the overlapping region does not contain the white or Latino sample proportions; therefore, there is evidence of a significant difference between their true proportions.
The confidence intervals for white and Latino overlap, as do those for black and Latino, which means that there is no significant difference in their proportions.
There are no confidence intervals that overlap, implying that there is a significant difference in their population proportions.
Intervals that overlap do not give any indication about the difference of the true population proportion.
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