A student has a mean score of 89 on 5 tests. what will be the new mean if she scores a 95 on the next test?
(89+95)/6=X
Yep!
But I got 30.667 as my answer. So do I add that to the 89?
Oh, I see what's wrong.
You need to multiply 89 by 5 and then add 95.
[(89 * 5) + 95] / 6 = ?
Oh okay. Thank you
To find the new mean score, you need to calculate the sum of all the scores and then divide it by the total number of scores.
In this case, the student has 5 test scores with a mean score of 89. So, the sum of the 5 scores would be 5 * 89.
Next, you need to add the score of the next test, which is 95, to the sum.
Finally, divide the new sum by the total number of tests, which is 6.
Putting it all together, the formula to calculate the new mean score is (5 * 89 + 95) / 6.