What can be measured in nanometers?

Nanometers are a really small measurement, one billionth of a meter, I believe.

So nanometers is used to describe tiny stuff, like atoms of a water molecule, and waves of  light.

- 0.196 < μ < +0.196

Step-by-step explanation:

n = 100

σ = 1

X bar (x⁻) = 0

1 - ∝ =95%

μ = ?

= X bar (x⁻) ± Z ∝/₂ * σ/√n

Finding ∝:

To find ∝, we will convert the confidence interval i.e. 95% into decimal by dividing it with 100 and subtracting it from 1.

1 - ∝ = 95%

1 - ∝ = 95/100

1 - ∝ = 0.95

∝ = 1 - 0.95

∝ = 0.05 (1)

We have to calculate ∝/2 so dividing both sides of (1) with 2

∝/2 = 0.05/2

∝/2 = 0.025

We will find the value of 0.025 in z-table. The value is:

Z ∝/2 = 1.96

For further calculations, we will use the value of Z∝/2.

Putting all values in the formula.

= 0 ± 1.96 * 1 / √100

We can also write this in the following form:

0 - 1.96/ √100 < μ < 0 + 1.96 / √100

- 1.96 / 10 < μ < 1.96 / 10   ∴ √100 = 10

- 0.196 <  μ < + 0.196