Martine sees a coat in a sale the coat originally costs £115, In the sale it is reduced to £97.75 work out the percentage reduction of the coat in the sale? Pls can someone help thank you

The centre line of the p chart is 0.03

Step-by-step explanation:

Given

Samples, n = 35

Packages, p = 25

Defective, d= 25

The centerline of a p-chart is the expected value of the proportions and is calculated based on sample data.

In this case, it is calculated as;

d/(p * s)

= 25/(25*35)

= 1/35

= 0.02857142857142857142857

= 0.03 approximated

Hence, the centre line of the p chart is 0.03