Question: In a large population, the average heating bill (which follows a normal distribution) is $145 with a standard deviation of 12.A sample of 60 residents

In a large population, the average heating bill (which follows a normal distribution) is $145 with a standard deviation of 12.A sample of 60 residents is taken.What is the range for which 90% of samples will be within?

State the standard error. (state your answer to 3 decimal places)

State the Z-value(State one of the Z-values)

State the larger X value (1 decimal place)

State the smaller X value (1 decimal place)

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