[填空题]
Four cement bags labelled, "5 kg", were delivered to a custo*aa/ c0gzw,t jmer. The*r 1moejg o 5.yblt.xn,r+m-fgb7 /se customer measured each bag to check their weights and recorded the folgxgtmn -.*m51eb7b+y/oerorsfj, l .lowing:
4.92,4.95,5.02,4.95
1.1.Find the mean of the customer's measurements.
If we calculate the mean of the measurements, we get μ= .
1.2.Calculate the percentage error between the mean and the stated,
approximate weight of 5 kg.
Using the percentage error formula ϵ= %.
2.1.correct to the nearest integer;
The number= .
2.2.in the form a×10$^k$, where 1≤a<10 and k∈Z.
The number= ×10$^1$.
