2 years ago

4b) Work out the mean and standard deviation of the following: picture included

Mathematics

1 answer:

Jlenok [28]2 years ago

4 0

Answer:

Yes, your simultaneous equations are correct;

Solve them like so:

170 + 1.6449σ = 180 - 0.8416

2.4865σ = 10

σ = 4.0217...

μ = 170 + 1.6449(4.0217...)

μ = 176.615...

MS is correct, you must've made an error in solving or rearranging

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