The variance of a sample was reported to be 81.The report indicated that 
= 972.What has been the sample size?
Definitions:
Frame Rails
The long, structural members of a vehicle frame that provide support and shape to the vehicle's body and chassis.
Suspension Weight
The portion of a vehicle's total weight that is supported by its suspension system.
Brake Capacity
The maximum braking force that can be applied by a vehicle’s braking system, influencing the vehicle's stopping distance and safety.
Chill Strip
A component used in casting and metalworking to cool and solidify metal rapidly by conducting heat away from the casting.
Q19: A population has a mean of 180
Q41: Write the first four terms of the
Q42: Refer to Exhibit 6-4.The mean of x
Q47: A weighted average of the value of
Q49: The total number of data items with
Q66: In computing the mean of a
Q82: Refer to Exhibit 6-3.The probability density function
Q100: A population characteristic,such as a population mean,is
Q120: Assume two events A and B
Q138: The measure of dispersion which is not