Drag and drop each number into the correct box to tell wheter it is rational or irrational

Mathematics

1 answer:

Vlad [161]3 years ago

3 0

Haven't you tried to answer these yourself?

Let me give you 2 examples:

First: The product of sqrt(2) and sqrt(25) is 5sqrt(2), which is irrational because sqrt(2) is irrational.

Second: 2pi*r evaluated at pi^(-1) is rational because pi/pi = 1 and 2 itself is rational.

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Assume that adults have IQ scores that are normally distributed with a mean of mu equals μ=105 and a standard deviation sigma eq

Over [174]

The probability that a randomly selected adult has an IQ less than

135 is 0.97725

Step-by-step explanation:

Assume that adults have IQ scores that are normally distributed with a mean of mu equals μ = 105 and a standard deviation sigma equals σ = 15

We need to find the probability that a randomly selected adult has an IQ less than 135

For the probability that X < b;

Convert b into a z-score using z = (X - μ)/σ, where μ is the mean and σ is the standard deviation
Use the normal distribution table of z to find the area to the left of the z-value ⇒ P(X < b)

∵ z = (X - μ)/σ

∵ μ = 105 , σ = 15 and X = 135

∴ $z=\frac{135-105}{15}=2$