Find the indicated probability.The following contingency table provides a joint frequency distribution for the popular votes cast in the 1984 presidential election by region and political party. Data are in thousands, rounded to the nearest thousand. Political Party
A person who voted in the 1984 presidential election is selected at random. Compute the probability that the person selected voted Democrat given that they are from the Midwest.
A. 0.413
B. 0.567
C. 0.280
D. 0.113
Answer: A
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Answer the question.There is a distributive property for multiplication with respect to addition: a(b + c) = ab + ac. Is there a distributive property for division with respect to addition? If so, state the property.
A. No. B. Yes. a/(b + c) = a/b + a/c
Multiply.1.0 ? (-4.60)
A. 5.6 B. 5.7 C. -4.6 D. -3.6
Secret messages can be encoded by using a code and an encoding matrix. If we have the code: 
and an encoding matrix: E = 
, we can encode a message by taking every two letters of the message, converting them to their corresponding numbers, creating a 
/> matrix, and then multiplying each two numbers by E. Use the code and encoding scheme above and an additional encoding matrix, F = 
, to answer the question.If the letters to be encoded are L = 
, show that (E + F)L = EL + FL.
What will be an ideal response?
Add or subtract as indicated.(19s + 13t) + (15t - 3s)
A. 44st B. 34s + 10 C. 22s + 28t D. 16s + 28t