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lozanna [386]
3 years ago
15

Maggy wants to buy 4 roses 6 carnations and 9 tulips. She estimates that she will spend $14 on theses flowers. Do you agree? Exp

lain your answer.
Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
5 0
Depends on the price of the flowers. 
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Answer:

μ ≈ 2.33

σ ≈ 1.25

Step-by-step explanation:

Each person has equal probability of ⅓.

\left[\begin{array}{cc}X&P(X)\\1&\frac{1}{3}\\2&\frac{1}{3}\\4&\frac{1}{3}\end{array}\right]

The mean is the expected value:

μ = E(X) = ∑ X P(X)

μ = (1) (⅓) + (2) (⅓) + (4) (⅓)

μ = ⁷/₃

The standard deviation is:

σ² = ∑ (X−μ)² P(X)

σ² = (1 − ⁷/₃)² (⅓) + (2 − ⁷/₃)² (⅓) + (4 − ⁷/₃)² (⅓)

σ² = ¹⁴/₉

σ ≈ 1.25

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3 years ago
What is 100 divided by 6
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How do you write 0.33 as a percent
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You would write 0.33 as 33%.

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