Answer:
20
Step-by-step explanation:
8×25 means that he got 5 wrong so he got 20 right
Answer:
The answer is 20.
Step-by-step explanation:
First step is to turn the 80% into a decimal. So place a decimal twice to the left to make it .80. Then, multiply 20 by .80. Upon that, you get your answer.
mean number of points Holly scores is 20 with
a standard deviation of 2. The mean number
of points Juanita scores is 12 with a standard
deviation of 1.25. Whose score is better relative
to her average number of points per game?
Answer:
Juanita's score was better
Step-by-step explanation:
Juanita scored 6.4 points above her average score whereas Holly only scored 2.5 points above her average score. (this was calculated via z-scores)
To find who performed better relative to their average, we calculated the z-scores of both players. Juanita's score was 3.2 standard deviations above her mean, whereas Holly's was 2.5 standard deviations above her mean, making Juanita's performance relatively better.
To answer this question, we need to find how many standard deviations each player's score deviates from their respective means. This is referred to as the z-score. The z-score is calculated using the formula (X - μ) / σ, where X is the score, μ is the mean score and σ is the standard deviation.
For Holly, her z-score would be (25 - 20) / 2 = 2.5. This means Holly's score was 2.5 standard deviations above her mean score.
For Juanita, her z-score would be (16 - 12) / 1.25 = 3.2. This means Juanita's score was 3.2 standard deviations above her mean score.
Since Juanita's z-score is higher than Holly's, Juanita's score is better relative to her average number of points per game.
#SPJ2
Answer: 120 pieces.
Step-by-step explanation:
We know that 1 yard = 36 inches
Given: The length of each piece of ribbon= 25 yards
If she needs to cut 22 inches long pieces, then the total number of pieces cut from 1 ribbon
Thus, the total number of pieces she cut from 3 ribbons
Hence, the greatest number of 22-inch pieces that she can cut from the three ribbons =120