A group of eight individuals with high cholesterol levels were given a new drug that was designed to lower cholesterol levels. Cholesterol levels, in mg/dL, were measured before and after treatment for each individual, with the following results: Subject Before After 1 283 215 2 299 206 3 274 185 4 284 212 5 255 178 6 275 212 7 293 192 8 277 196 Can you conclude that the mean cholesterol level after treatment is less than the mean before treatment

Yes, we can conclude that the mean after treatment is lesser than the mean before treatment

Step-by-step explanation:

Given

Required

Can we conclude that the mean after treatment is lesser than the mean before

To do this, we calculate the mean of before and after treatment.

Mean is calculated as:

Where

So, we have:

Before treatment

After treatment

By comparison:

So:

Yes, we can conclude that the mean after is lesser than the mean before

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step-by-step explanation:

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