Answer:
Pr(all will survive in one year) = 0.35 to 2 decimal places
Pr(at least 8 will survive) = 0.39 to 2 decimal places.
Step-by-step explanation:
Probability of a tree surviving one year is 0.9. While not surviving probability is 1 - 0.9 = 0.1
This is obtained from the 90℅ surviving rate for one year planted by the landscaping firm.
Probability that if 10 trees are planted, all will survive for one year is:
0.9x0.9x0.9x0.9x0.9x0.9x0.9x0.9x0.9x0.9 = 0.9^10 = 0.349
Probability that at least 8 will survive in one year can be expressed as
8 survived x 2 not survived +(or) 9 survived x 1 not survived +(or) 10 survived
= [(0.9^8)x(0.1^2) + (0.9^9)x(0.1^1) + (0.9^10)] = 0.391
Answer:
The number of people out of 300 , who said they prefer chunky-style peanut butter is 201 .
Step-by-step explanation:
The number of people on which surveyed done = 300 people
The percentage of peanut butter lovers prefer chunky-style = 67 %
Let The number of peanut butter lovers prefer chunky-style = x
So, The number of peanut butter lovers prefer chunky-style = 67 % of 300
Or, The number of peanut butter lovers prefer chunky-style = 
× 300
Or, x = 0.67 × 300
∴ x = 201
Hence The number of people out of 300 , who said they prefer chunky-style peanut butter is 201 . Answer
Answer:
Incorrect
Step-by-step explanation:
The angle is acute,which means under right triangle's usual size.
You need at least 90 cm to have a right triangle so no she is incorrect
Answer:
52%
Step-by-step explanation:
62/120 * 100%
Divide by 2 on top and bottom
31/60 * 100 %
.5166666666 * 100 %
51.66666666 %
To the nearest whole number
Rounding the 1, we look at the 6 6>=5 so we round the 1 to 2
52%
What am I supposed to be factoring?
