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Bess [88]
3 years ago
12

In a genetic experiment involving flower color in phlox, a ratio of 3 blue-flowered plants to 1 whiteflowered plant was expected

. The observed results were 35 blue-flowered plants and 14 white-flowered plants. Does the observed ratio differe significantly from the expected ratio?
Mathematics
1 answer:
aliya0001 [1]3 years ago
3 0

Answer: The observed ratio is different from the expected ratio.

Step-by-step explanation:

Since we have given that

Expected ratio :

Ratio of blue flowered plants to white flowered plant = 3:1

Observed results:

Number of blue flowered plants = 35

Number of white flowered plants = 14

So, Ratio of blue flowered plants : white flowered plants

35:14\\\\=5:2

So, 5:2 ≠ 3:1

Hence, the observed ratio is different from the expected ratio.

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2. Suppose that P(A) = 0.32, P(B) = 0.46, P(C) = 0.23, P(A ∪ B) = 0.57, P(A ∪ C) = 0.55, P(B ∪ C) = 0.49. a. Compute P(B ′ ). b.
Liula [17]

Answer:

Step-by-step explanation:

From the given information:

a.

Compute P(B'):

P(B') = 1 - P(B) \\ \\P(B') = 1 - 0.46 \\ \\ P(B') = \mathbf{0.54}

b.

Compute P(A ∩ B)

P(A ∩ B) =  P(A) +P(B) - P(A∪B)

P(A ∩ B) =  0.32 + 0.46 - 0.57

P(A ∩ B) =  0.21

Thus, since P(A ∩ B) ≠ 0, we can say that they are not mutually exclusive.

c.

P(A ∩ C) = P(A) +P(C) - P(A∪C)

P(A ∩ C) = 0.32 + 0.23 -0.55

P(A ∩ C) =  0

Thus, since P(A ∩ C) = 0, we can say that they are both mutually exclusive.

d. To determine  P[(A ∪ B ∪ C)′]

i.e. none of the events occurring

Then :

P(B ∩ C) = 0.46 +0.23 -0.49

P(B ∩ C) = 0.20

Therefore:

P(A ∪ B ∪ C) = P(A) + P(B) + P(C) - P(A ∩ B ) - P(A  ∩ C) - P(B ∩ C)  + P(A ∩ B ∩ C)

P(A ∪ B ∪ C) = 0.32 + 0.46 + 0.23 - 0.21 - 0 - 0.20 + 0

P(A ∪ B ∪ C) = 0.60

3 0
3 years ago
Unscramble the place value of 9 hundreds 4 ten thousands 8 ones 7 tens
madreJ [45]
9 hundreds 4 ten thousends 8 ones 7 tens = 940008,7 

hope helped 
7 0
3 years ago
WILL REWARD What is the equation of the line in point-slope form?
romanna [79]

Step-by-step explanation:

the red point is (4, -5).

so, y - (-5) = -1/7(x - 4)

Topic: coordinate geometry

If you like to venture further, feel free to check out my insta (learntionary). I'll be constantly posting math tips and notes! Thanks!

8 0
3 years ago
Use De Morgan's laws to write negations for the statement. Sam is an orange belt and Kate is a red belt.
iVinArrow [24]

Answer:

C. Same is not an orange belt and Kate is not a red belt.

Step-by-step explanation:

A negation is an operation that "takes a statement and changes it to a statement whose true or false value is opposite". For example, if I were to say 2 + 2 = 4, the negation would be that 2 + 2 ≠ 4.

So, if Sam is an orange belt and Kate is a red belt, the negation is C. Same is not an orange belt and Kate is not a red belt.

Hope this helps!

5 0
4 years ago
Read 2 more answers
Ann and betty together have $60. Ann has 9 more than twice bettys amount. How much money does each have together
labwork [276]
60÷2+9 = 39
60-39=21
betty has 21$
ann has 39$
3 0
3 years ago
Read 2 more answers
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