Find the proportion of observations of a standard normal distribution that are between the given z-scores.1.26 and 2.15
A. 0.0862
B. 0.0881
C. 0.0898
D. 0.5880
Answer: B
Mathematics
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Solve the problem.A group of 8 people wants to buy a boat. The boat costs $880. If they all pay the same amount, how much is each person's share?
A. $97 B. $110 C. $100 D. $120
Mathematics
Multiply. Assume that all variables represent nonnegative real numbers.
A. 3x2 - x 
- 3x 
+ 
B. 3x2 + 
C. 3x2 - x 
- 
- 
D. 3x2 - x 
- 3x 
Mathematics
Solve the problem.The voltage E in an electrical circuit is given by E = 5.9 cos 50?t, where t is time measured in seconds. Find the period.
A. 25
B. 
C. 
D. 25?
Mathematics
Evaluate.
A. 85,140 B. 1980 C. 135 D. 3,575,880
Mathematics