What is the mean of 6,3,2,1,9,9

Mathematics

2 answers:

andriy [413]3 years ago

6 0

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{5}}}}}$

Step-by-step explanation:

Given data : 6 , 3 , 2 , 1 , 9 , 9

Σfx = 6 + 3 + 2 + 1 + 9 + 9 = 30

N ( total number of observation ) = 6

Finding the mean 

$\boxed{ \sf{mean = \frac{Σfx}{N} }}$

$\dashrightarrow{ \sf{mean = \frac{30}{6} }}$

$\dashrightarrow{ \sf{mean = 5}}$

Hope I helped!

Best regards! :D

ololo11 [35]3 years ago

4 0

5 you add them all up and then divide by how many number you added

(6+3+2+1+9+9) and then divide by 6

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Weights of American adults are normally distributed with a mean of 180 pounds and a standard deviation of 8 pounds. What is the

ahrayia [7]

Answer:

15.87% probability that a randomly selected individual will be between 185 and 190 pounds

Step-by-step explanation:

Problems of normally distributed samples are 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:

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