Complete the chart to find the mean, variance, and standard deviation. remember to use commas and round numbers
to the nearest tenth.
x-x
x-x?
1. 45
= -357.5
the mean is
2.340
=-62.5
the variance is
3.400
= -2.5
the standard deviation is
4. 825
= 422.5
ex=
ex - x)2 = 310,225.2

19.92

Step-by-step explanation:

To overfill 5% of the time ;

The Zscore (value) to the left of (1 - 0.05) = 0.95 is 1.645

Using this Zscore value with the Zscore formula :

Zscore = (x - μ) / σ

σ = 0.05 ; x = 20 ounce

Substituting into the Zscore formula :

1.645 = (20 - μ) / 0.05

1.645*0.05 = 20 - μ

0.08225 = 20 - μ

μ = 20 - 0.08225

μ = 19.91775

μ = 19.92