3 years ago

Identify the correct statements about "2n ≥ 100

Mathematics

1 answer:

hodyreva [135]3 years ago

5 0

I'm not sure what the question is asking. But it can be rewritten as n≥50 which shows the solved equality

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Stacy and Travis are rock climbing. Stacy's rope is 4 feet shorter than 3 times the length of Travis' rope. Stacy's rope is 23 f

hichkok12 [17]

3x23 =69
69-4 =65

travis's rope is 65 feet long

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3 years ago

Calculate the upper and lower limit for a 95% confidence interval about this mean. a family needs a new car, but isn't sure they

Ket [755]

<span>Answer: Where:
θ = confidence value
n = number of observations
μ = mean
Θ = standard deviation
... then your interval will be:
μ - θΘ/√n ≤ X ≤ μ - θΘ/√n
For some reason they want you to calculate the standard error, which is the Θ/√n section, and I mentioned the 1.96 value, so the above equation simplifies to: μ - 1.96SE ≤ X ≤ μ - 1.96SE</span>

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3 years ago

30 is 1/10 of please tell and help me

rjkz [21]

Answer:

i think 1/300

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

How do you do these questions?

Tanzania [10]

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

3 0

3 years ago

Write four solution of the equation=2x+y=7

Fantom [35]

Step-by-step explanation:

x = 1, y = 5

x = 2, y = 3

x =3, y= 1

x=4 y=-1

4 0

3 years ago