The following table presents the numbers of employees, by age group, who were promoted, or not promoted, in a sample drawn from a certain industry during the past year. Under 30 promoted: 16, 30-39 promoted: 25, 40-49 promoted: 25, 50 and over: 5. Under 30 not promoted: 28, 30-39 not promoted: 49, 40-49 not promoted: 37, 50 and over not promoted: 44. Can you conclude that the people in some age groups are more likely to be promoted than those in other age groups? Use the a=0.01 level of significance and the p-value method with the TI-84 Plus calculator. State the null hypothesis

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