Answer: Sample statistics are used to make inferences about population parameters.
Step-by-step explanation:
A number which describes a population is called a parameter, such as a proportion or percentage.
A statistic is a number which may be calculated from the data observed in a random sample without demanding the use of any unknown parameters.
The mean and variance of a population are population parameters.
Thus, fourth statement is the right answer "Sample statistics are used to make inferences about population parameters."
Answer:
-9
Step-by-step explanation:
We are told in the question that:
Xavier climbs 9 feet up into an apple tree.
The direction symbol or sign for upwards movement = Positive (+) sign
If Xavier would climb back down , he will climb back down 9 feet as well
The direction symbol or sign for downwards movement = Negative (-) sign
Since we know the distance (or how far) he has to climb by downwards is also 9 feet, therefore, the integer that represents the direction and how far he will climb to get back down to the ground is -9
Answer:
(3y - 11z)2
Step-by-step explanation:
hahaha hello again
Answer:
Step-by-step explanation:
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