The mean grade on the quiz was 88.
<u>Step-by-step explanation:</u>
We need to find the mean grade of the quiz using the information given.
The mean also known as the average is defined as the sum of data entries in a set divided by the number of entries in the data set.
The standard deviation gives the amount of variation or dispersion of data values present in a data set.
The given data are,
- The standard deviation of the quiz, SD = 3.
- The score 94 is exactly 2 standard deviations above the mean.
The above sentence represents that 94 is above the mean with 2 standard deviations.
⇒ 94 = Mean + 2 standard deviations.
We know the value for standard deviation. So substitute SD= 3 in the expression provided.
⇒ 94 = Mean + (2×3)
⇒ 94 = Mean + 6
To find mean, subtract 6 on both sides.
⇒ 94 -6 = Mean
⇒ Mean = 88
Therefore, the mean grade on the quiz was 88.
Answer:
2, because there is 16 fluid ounces in a pint and 16+16= 32
Answer:
28
Step-by-step explanation:
let x be the number,
(3/4)x+5=26
(3/4)x=21
x=21*(4/3)
x=28
Answer:
50 dollars an hour
Step-by-step explanation:
Answer:
6/8 simplified form 3/4
Step-by-step explanation:
Given: 3/8 + 1/8 + 2/8
Here we have to find the sum of the fractions.
All the fractions are like fractions.
So we can add the numerators and keep the denominator as it is. (We should not add the denominator)
Therefore,
3/8 + 1/8 + 2/8 = (3 + 1 + 2)/8
= 6/8
We can simplify this fraction by dividing both the numerator and the denominator by 2.
= 6/8
= 3/4
Hope this is will help you to understand the concept.
Thank you.
