Answer:
0.79 ; 0.753
Step-by-step explanation:
Given that:
Students who have spent at least five hours studying GMAT review guides have a probability of 0.85 of scoring above 400 :
≥ 5 hours review = 0.85
Students who do not spend at least five hours reviewing have a probability of 0.65 of scoring above 400
< 5 hours = 0.65
70% (0.7) of business students spend atleast 5 hours review time
A.) probability of scoring above 400
(Proportion who spend atleast 5 hours review time * 0.85) + (Proportion who do not spend atleast 5 hours * 0.65)
Proportion who do not spend atleast 5 hours = (1 - proportion who spend atleast 5 hours) = 1 - 0.7 = 0.3
Hence,
P(scoring above 400) = (0.7 * 0.85) + (0.3 * 0.65) = 0.595 + 0.195
= 0.79
B.) probability that given a student scored above 400, he/she spent at least five hours reviewing for the test.
P(spent ≥5 hours review | score above 400) :
P(spent ≥5 hours review) / P(score > 400)
(0.7 * 0.85) / 0.79
0.595 / 0.79
= 0.753
Answer:
They have over spent $925
Step-by-step explanation:
Given:
The Monthly amount Flynn's spent on Household = $555
Amount spent In June and July together = #2035
To Find:
The over spent amount in June and July = ?
Solution:
For a month the budget is $555
According to the budget the amount they should have spent for the month of June and July will be
=> $555 for June + $555 for July
=> $1110
But they have spent $ 2035 for June and July together
Si the extra amount will be
Amount spent - actual budget amount
=> $2035 - $1110
=> $925
Answer:
11x3 or 16.5 to the power of two or: 30+3.
Answer:
B 12x+11
Step-by-step explanation:
4x + 8x + 7 + 4
Combine like terms
12x +11
Without calculating, you can immediately see the absolute value sign, which implies that the final result (x) should be positive, not negative.
