Scientists estimate that there are10times more bacterial cells in your body than your own body's cells, and new studies on bacteria in the gut indicate that your gut microbes might be influencing you more than you realize, having positive or negative effects on health, development, and possibly even personality and behavior

Scientists estimate that there are10times more bacterial cells in your body than your own body's cells, and new studies on bacteria in the gut indicate that your gut microbes might be influencing you more than you realize, having positive or negative effects on health, development, and possibly even personality and behavior. A recent study¹found that the average number of unique genes in gut bacteria, for a sample of99healthy European individuals, was564million, with a standard deviation of122million. Use thet-distribution to find a95%confidence interval for the mean number of unique genes in gut bacteria for European individuals.

Round your answers to two decimal places.

The95%confidence interval is__________ million to____________  million.

¹Qin, J., et. al., ''A human gut microbial gene catalogue established by metagenomic sequencing," Nature, 4 March 2010; 464: 59-65.