Jim Miller works in the personnel department for a car company. He is told by his supervisor to investigate the difference in the average number of sick days between blue collar workers and white collar workers. So he obtained a random sample of 9 blue collar workers and a random sample of 9 white collar workers. He records the results below. At 10% level of significance, is there sufficient evidence to indicate a difference in mean sick days between blue collar workers and white collar workers

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