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bagirrra123 [75]
3 years ago
10

You want to invest in companies belonging to Gispa Group of

Mathematics
1 answer:
Leviafan [203]3 years ago
4 0

Answer:

1.2803

Step-by-step explanation:

According to the Question,

  • Given That, You want to invest in companies belonging to Gispa Group of 1  Companies, Inc. so you did some research and found out that companies belonging to this group have an average gain of 0.8 percent and a standard deviation of 0.7 percent.
  • And, a positive percent (gain) means profit and a negative percent means a loss. If you choose 20 companies.

Therefore, We have Average Gain(ц) = 0.8%

Standard deviation(σ) = 0.7%

Number of Companies(n) = 20

  • So, the probability that the companies are gaining more than  1  percent is

X_{i} = (σ² × n) / ц  ⇒  (0.7²×20) / (0.8*10) = 1.2803

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