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KIM [24]
3 years ago
14

A bag has 6 red rocks, 1 orange rock, 4 blue rocks, 1 white rock, and 7 yellow rocks. You randomly pull a rock from the bag, kee

p it out and then pull out another one. What is the probability of not getting a orange and then not getting a orange?
Mathematics
1 answer:
8090 [49]3 years ago
5 0

Answer: 17/19

Step-by-step explanation:

Number of red rocks = 6

Number of orange rock = 1

Number of blue rocks = 4

Number of white rock = 1

Number of yellow rocks = 7

Total number of rocks = 19

Probability of not getting a orange the first time will be (1 - 1/19) = 18/19.

Probability of not getting an orange the second time will be: (1 - 1/18) = 17/18

Probability of not getting an orange on both occasion will be:

= 18/19 × 17/18

= 17/19

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p-value = 0.1277

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p-value is the probability value tell us how likely it is to get a result like this if the Null Hypothesis is true.

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Then the p-value at 99% level of significance.

⇒ p-value = 0.1277

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