A Z-score helps us to understand how far is the data from the mean. The number of phones who have battery life in the range of 11.4 to 13 range is 1145.
<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 percentage of phones who have battery life in the range of 11.4 to 13 range is,
= 0.50 - 0.0228
= 0.4772
Now, the number of phones who have battery life in the range of 11.4 to 13 range is,
Number of phones = 0.4772 × 2400 = 1145.28 ≈ 1145
Hence, the number of phones who have battery life in the range of 11.4 to 13 range is 1145.
Learn more about Z-score:
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You may park 20 feet from a crosswalk.
Answer:
ez the domain his the first number and the range is the second. so the domain here is 0,5,1 do not write two same numbers like 0 and 0 and the range is 5,2,-4 and again do not write 5 twice
Step-by-step explanation:
0,5,1 is the domain i could be wrong lol
Answer:
They caught: 11/12 pounds of fish
Explanation:
First, you need to change them to the same common denominator. Since 3 and 6 already go into 12, you just have to change 1/3 and 1/6 to a denominator with 12.
First, you need to change 1/3 to 4/12. By doing that, you do 1/3x4/4=4/12.
You then have to change 1/6 to 2/12. By doing that, you do 1/6x2/2=2/12.
Then you just add up all the fractions and simplify 4/12+2/12+5/12=11/12.
You can't simplify 11/12 any further so your answer would be:
They caught 11/12 pounds of fish in total.
Yo i think it's A, due to the fact that the more gallons you have, the more minutes you can drive. hope this helps, have an amazing day :)
