Solve the problem.Ten students in a graduate program were randomly selected. Their grade point averages (GPAs) when they entered the program were between 3.5 and 4.0. The following data were obtained regarding their GPAs on entering the program versus their current GPAs. Find the equation of the least-squares regression line that models the data. Entering GPA Current GPA 3.5 3.6 3.8 3.7 3.6 3.9 3.6 3.6 3.5 3.9 3.9 3.8 4.0 3.7 3.9 3.9 3.5 3.8 3.7 4.0
A. y ? 3.67 + 0.0313x
B. y ? 2.51 + 0.329x
C. y ? 4.91 + 0.0212x
D. y ? 5.81 + 0.497x
Answer: A
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Find the probability of the following card hands from a 52-card deck. In poker, aces are either high or low. A bridge hand is made up of 13 cards.In bridge, 4 aces
A. 0.00118 B. 0.01056 C. 0.00264 D. 0.00059
Write the compound statement in symbolic form. Let letters assigned to the simple statements represent English sentences that are not negated. Use the dominance of connectives to show grouping symbols (parentheses) in symbolic statements.If I like the song I do not change the station if and only if the DJ is entertaining.
A. (p ? r) ? q B. (p ? ~r) ? q C. p ?( r ? q) D. p ? (~r ? q)
Solve the problem.At the end of 9 mo, the balance of an account earning annual simple interest is $8180. If at the end of 15 mo the balance is $8300, what is the annual interest rate?
A. 4% B. 3.5% C. 3% D. 2%
Solve.-4a = 28
A. 1 B. 32 C. -7 D. -32