Overfishing has become a serious threat to the environment. According to the United Nations, approximately 90% of large predatory fish are already gone; 17% of fish worldwide are currently overexploited; 52% are fully exploited; and 7% are depleted. It is projected that all major economic fish species will be completely extinct by 2048, which will be disastrous to the planet Earth and human race. This paper uses the STEAMS (Science, Technology, Engineering, Artificial Intelligence, Math, and Statistics) approach to determine if there is any evidence of overfishing between 1970 and 1980. To answer this question, we compare the inflation adjusted price of 14 species of fish in 1970 to the price in 1980. Overfishing reduces fish stocks in the sea, thus decreasing the supply for fish and causing fish price to rise faster than inflation. To allow fair comparison, fish price in 1970 is adjusted using CPI index to 1980 level. Log transformation is used to transform fish price into the normal distribution. Then, matched pairs t-test is used to investigate if the price change from 1970 to 1980 is statistically significant. Hypothesis testing is used to ensure the analysis is statistically valid.
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