When organisms attempt to use the same resources

Weights of golden retriever dogs are normally distributed. samples of weights of golden retriever dogs, each of size nequals15, are randomly collected and the sample means are found. is it correct to conclude that the sample means cannot be treated as being from a normal distribution because the sample size is too small? explain.

Me the formula cacl2 represents the compound

What if the yeast were extremely active and produced more than 100ml gas. would you know? why/why not