The weights of packs of chewing gum for a certain brand have a mean of 47.1 grams and a standard deviation 2.4
1 answer:
A Z-score helps us to understand how far is the data from the mean. The correct option is B.
<h3>What is Z-score?</h3>A Z-score helps us to understand how far is the data from the mean. It is a measure of how many times the data is above or below the mean. It is given by the formula,
Where Z is the Z-score,
X is the data point,
μ is the mean and σ is the standard variable.
The weight of a randomly selected pack of gum has a z-score of 3.11. Therefore, The weight of this pack of gum is heavier than the mean weight by 3.11 standard deviations.
Hence, the correct option is B.
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Let's turn this into a fraction using the given information we already have.
We want the denominator, or the bottom part of the fraction, to be 1 in order for us to have a unit rate.
This fraction can be simplified if we divide both the numerator and denominator by 3.
Numerator: 18/3 = 6
Denominator: 3/3 = 1
Now we have
Any number divided by 1 is equal to that number.
Thus, your unit rate is 6 miles per hour.
Have an awesome day! :)
~AgentCozmo4, Junior Moderator
We want the denominator, or the bottom part of the fraction, to be 1 in order for us to have a unit rate.
This fraction can be simplified if we divide both the numerator and denominator by 3.
Numerator: 18/3 = 6
Denominator: 3/3 = 1
Now we have
Any number divided by 1 is equal to that number.
Thus, your unit rate is 6 miles per hour.
Have an awesome day! :)
~AgentCozmo4, Junior Moderator