The mean is the average of a set of numbers.

So if the remaining 40% of students score 100 points, and the 60% score like 50 points, then the mean would still be 70 points because of the 40% of students that scored super high.

So yes, it can be true.

8 0

4 years ago

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two walkers 16 miles apart travel toward each other. one travel 3 miles per hour and the other 4 miles per hour. if the latter i

dem82 [27]

I think 8 hours
I'm not sure

5 0

3 years ago

HELP NOW PLS EXTRA POINTS!!

aivan3 [116]

Answer:

X° + 44° = 2x° + 11° [ Sum of two adjacent interior angles of a triangle = opposite exterior angle]

=> - x° = 11°-44°

=> -x° = -33°

=> x° = 33°

Therefore the value of x° = 33°

Hope it helps

4 0

3 years ago

The mean number of words per minute (WPM) typed by a speed typist is 149149 with a standard deviation of 1414 WPM. What is the p

Semmy [17]

Answer:

The probability is $P(\= X > x ) = 0.78814$

Step-by-step explanation:

From the question we are given that

The population mean is $\mu = 149$

The standard deviation is $\sigma = 14$

The random number $x = 147.81$

The sample size is $n = 88$

The probability that the sample mean would be greater than $P(\= X > x ) = P( \frac{ \= x - \mu }{\sigma_{\= x} } > \frac{ x - \mu }{\sigma_{\= x} } )$