SOLUTION: Mary Martinez loves to weigh things with her new electronic scale that is accurate to the nearest gram. Mary has always wondered whether or not the cereal inside the boxes of her f

Question 329553: Mary Martinez loves to weigh things with her new electronic scale that is accurate to the nearest gram. Mary has always wondered whether or not the cereal inside the boxes of her favorite brand actually weighs 300 grams as shown on the carton, so she decides to weigh the cereal inside the next 21 boxes that she buys. Results are as follows:
297 303 289 314 302 301 300
302 288 294 296 297 300 299
391 287 286 288 295 298 302
The sample mean = 301.38 grams and the sample standard deviation = 21.60 grams.

State the appropriate null and alternative hypotheses.

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Mary Martinez loves to weigh things with her new electronic scale that is accurate to the nearest gram. Mary has always wondered whether or not the cereal inside the boxes of her favorite brand actually weighs 300 grams as shown on the carton, so she decides to weigh the cereal inside the next 21 boxes that she buys. Results are as follows:
297 303 289 314 302 301 300
302 288 294 296 297 300 299
391 287 286 288 295 298 302
The sample mean = 301.38 grams and the sample standard deviation = 21.60 grams.
State the appropriate null and alternative hypotheses.
Ho: u = 300 grams
Ha: u is not equal to 300 grams
-------------------
Cheers,
Stan H.
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