(Answered) F crispr cas9 inc which makes protein for gene therapy has

Economics

F. CRISPR Cas9, Inc which makes Protein for Gene therapy has received complaints of inconsistent quantities in its packaging. Packed correctly, the weight of the box should be 200 grams. A small sample of 25 packets showed a sample mean of 208 grams. From the past experience, the standard deviation is known to be 20 grams. CRISPR Cas9 uses a level of significance of 5%. 1. What is the p-Value? Should we reject the Null?

We have to manually calculate this using a standard Z table. I calculated the p value as .0459. Professor says the real answer is .0455003

Help me understand wrong answer.

Also, this should be a 1 tail correct?

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