Answer: 0.9147
Step-by-step explanation:
Given: 20% of the plants ordered are petunias.
Let p = 20% = 0.2
Sample size: n = 120
If they follow normal distribution, then mean = np = 120x 0.2 = 24
Standard deviation =
The probability that no more than 30 plants are petunias :
Hence, the probability that no more than 30 plants are petunias = 0.9147
Answer:
8/25 or 0.32
Step-by-step explanation:
Where did you get the singers from? And what does 80% of y have to do with singers?
7+7+1=15 hopefully it helps :)