Answer:
0.2061
Step-by-step explanation:
Probability (no crash) = 66% = 0.66
Average (no crash) expected out of 152 computers = 0.66 (152) = 100.32
Standard deviation 's' = √ [ (154) (0.66) (1-0.66) ] = √ (154) (0.66) (0.34)
= √ 34.5576 = 5.87
P (x <u>></u> 96) = 1 - P (x <u><</u> 95)
z= (x - u) / s ; x = sample mean = 95.5 (continuity correction factor = 0.5) , u = population average = 100.32
z = (95.5 - 100.32) / 5.87 = 4.82 / 5.87 = 0.82
P (x <u><</u> 95) = P (z <u><</u> 0.82) = 0.7939
P (x <u>></u> 96) = 1 - 0.7939 = 0.2061
Are you being asked to solve for A? B?
Solve for A:
Take a plus of minus square root
A=
A=
Solve B:
Take plus or minus square roots
Answer:
The correct answer is -238/15
Step-by-step explanation:
To solve this, start by turning both into improper fractions.
2 4/5 = 14/5
-5 2/3 = -17/3
Now we multiply the numerators and denominators.
14 * -17 = -238
3 * 5 = 15
So the answer would be:
-238/15 OR 15.8667
9/160 is <span>0.05625
_
160/9 is </span>17.7
