The distribution of assembly times required to assemble a certain smartphone is approximately normal with mean 46 minutes and standard deviation 0.6 minute. Of the following, which is closest to the percentage of
assembly times between 4 and 5 minutes?

59%

Step-by-step explanation:

I assume you mean 4.6 minutes.

Calculate the z-scores.

z = (x − μ) / σ

z₁ = (4 − 4.6) / 0.6

z₁ = -1

z₂ = (5 − 4.6) / 0.6

z₂ = 0.67

Use a calculator or chart to find the probability.

P(-1 < Z < 0.67) = P(Z < 0.67) − P(Z < -1)

P(-1 < Z < 0.67) = 0.7486 − 0.1587

P(-1 < Z < 0.67) = 0.5899

The probability is approximately 59%.

answer:

the position of equilibrium will shift to the left.

step-by-step explanation:

the general equation for the dissociation of a weak base is

b + h₂o   ⇌   bh⁺ + oh⁻

according to le châtelier's principle, when a stress is applied to a system at equilibrium, the system will respond in a way that tends to relieve the stress.

if you apply a stress by adding more bh⁺ or oh⁻,   the system will respond by moving in a direction that gets rid of the added ions.

the position of equilibrium will shift to the left, forming more of the undissociated base.

$8

step-by-step explanation:

it is pretty much backwards.

you take the 4x2 multiply that, and that is = $8