Which sentence correctly describes a data set that follows a normal distribution with a standard deviation of 4 and a mean of 14?

Question

anonymous · Answer

68% of the data points lie between 10 and 14.

68% of the data points lie between 8 and 12.

68% of the data points lie between 10 and 18.

68% of the data points lie between 10 and 16.

paki · Answer

option A... 68% of the data points lie between 10 and 14.

anonymous · Answer

it was wrong :( thanks though

paki · Answer

it is rite... :/

anonymous · Answer

is ok :)

paki · Answer

mean =14 and st.dev = 4, what are the values of mean - st.dev and mean + st.dev... ?

anonymous · Answer

try this one....


The measured weights of 1,000 men in a certain village follow a normal distribution with a mean of 150 pounds and a standard deviation of 15 pounds. Which sentence most closely summarizes the data?

About 160 people weigh more than 165 pounds.

About 320 people weigh more than 165 pounds.

About 320 people weigh less than 165 pounds.

About 640 people weigh less than 165 pounds.