Question: A random sample of 225 full time students at a large two-year college is taken to estimate the amount they spent on text books this

A random sample of 225 full time students at a large two-year college is taken to estimate the amount they spent on text books this semester. The sampled students spent an average of $200 with a standard deviation of $75. Thus, a 95% confidence interval for the average amount spent by all full time students at that school would be:

$200 $0.33

$200 $5

$200 $10

$200 $75

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