Discussion:
A summary on the daily consumption of caffeine for a sample size of 49 adult women produced:
Ð = 49
X bar = 215 mg
s = 235 mg
range: 5 to 1176
1. Does it appear plausible that the population distribution of daily caffeine consumption is normal? Explain
2. Is it necessary to assume a normal population distribution to estimate the value of the population mean consumption µ? Explain
3. Suppose it had previously been believed that mean consumption µ was at most 180 mg. Does the given data contridict this prior belief? Explain.