Juan makes a measurement in a chemistry laboratory and records the result in his lab report. the standard deviation of students' lab measurements is σ = 10 milligrams. juan repeats the measurement 3 times and records the mean x⎯⎯⎯ of his 3 measurements. (a) what is the standard deviation of juan's mean result? (that is, if juan kept on making 3 measurements and averaging them, what would be the standard deviation of all his x⎯⎯⎯′s? ) (b) how many times must juan repeat the measurement to reduce the standard deviation of x⎯⎯⎯ to 2.5? (a) 5.77 (b)

yes

step-by-step explanation:

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation:

it is a secret for it not to be compromised sorry

step-by-step explanation:

step-by-step explanation:

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