ABCDEFGHIJKLMNOPQRSTUVWXYZAAABACADAEAFAGAHAIAJAKALAMANAOAPAQAR
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NameJS1JS2JS3CatherineJaymeKatcherNanBradWayneTorreyMichaelEmilyJohnEricPedroRattrayShannonMike
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Updates for NOT to occur when all resources absent (No reward for NOT)379358319599243693181182641294319319561476.0599490.0471
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Updates for NOT to occur when notose present (Reward for NOT)359511671717276491614285255498495632345375.0328472.0578
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Did a mutation conferring the NOT phenotype occur quicker when the environment rewards NOT?
YESNONONONOYESNONOYESNONONOYESYESYESYESNO
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Number of students reporting NOT occurred first when all resources absent10
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Number of students reporting NOT occurred first when notose present7
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Percentage of students reporting NOT occurred first when notose present41%
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p-value for the test using the binomial distribution if this is different from 50%0.83
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Probability at least this many students would report NOT occurring first given chance alone83%
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Is this significantly different from 50% (i.e. mutation equally likely in both environments)?no
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So, do these data support the hypothesis that the environment affects which mutations occur?
NO!
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Which scenario does the lab data support?
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Compare these lab data to the three sheets of example datasets:
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Option 1) Mutations are random with respect to the environment
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Option 2) Mutations are more likely if notose is absent
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Option 3) Mutations are more likely if notose is present
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