X is Binomial(7, 0.4).
Find E ( X ), Var ( X ), and SD( X ) for the given random variable
2.8, 1.68, 1.296148
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Evaluate the expression.
3
A. 
B. 3
C. 
D. 
Find a unit vector that has the same direction as the given vector.u = 
A. 
B. 
C. 
D. 
Estimate the indicated component or components of the vector. Round to an appropriate number of significant digits.
= 55.1, ? = 219.2°; Find the horizontal and vertical components of v.
A. horizontal = -42.7, vertical = -34.8 B. horizontal = 42.7, vertical = 34.8 C. horizontal = -42.7, vertical = 34.8 D. horizontal = 42.7, vertical = -34.8
Solve. Write the answer as a mixed number in simplest form.A rectangular flower bed in front of a building measures 1
feet by 9
feet. What is the total area of the flower bed? Hint: The area of a rectangle is the product of the length times the width.
A. 14 sq ft
B. 9
sq ft
C. 16 sq ft
D. 17 sq ft