The number of goals scored by 7 players in a soccer season was 8, 6, 4, 8, 3, 1, and 5.

2 answers:

6 0

The answer is 5. If you need help remembering how to find the mean, you add up all the numbers given and then divide it by how many numbers there are so for example

8+6+4+8+3+1+5= 35

35 divided by 7

=5

alexandr1967 [171]3 years ago

4 0

Answer:

mean = 5

Step-by-step explanation:

8 + 6 + 4 + 8 + 3 + 1 + 5 /7

35/7

= 5

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There are two college entrance exams that are often taken by students, Exam A and Exam B. The composite score on Exam A is appro

elena55 [62]

Answer:

B.The score on Exam A is better, because the percentile for the Exam A score is higher.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

Two exams. The exam that you did score better is the one in which you had a higher zscore.

The composite score on Exam A is approximately normally distributed with mean 20.1 and standard deviation 5.1.

This means that $\mu = 20.1, \sigma = 5.1$ .