T-test with Equal and Unequal Sample Size

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    For t-test, different sample sizes cause a problem or not. Suppose I have 500 female and 117 Males. Should I use equal sample size (117 Male and 117 Female) or can use all data (500 Females and 117 Males). What are implications on power and p-value due to equal or unequal sample size. Any reference or justification for my example, should I use equal or unequal sample size.

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