Answer:
A
Step-by-step explanation:
Plate X will result in the lightest place since it's density and thickness both are less.
Answer:
a) 50
b) 6.71
c) 0.0681
Step-by-step explanation:
check the attached file below
Explanation
Part A
We can use the formula below to find the mean.

We will then have;

Mean = 6.2632
Part B
Since the data set is odd.

Answer: From the column of cumulative frequency cf, the median is 7