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Imagine a researcher posed a null hypothesis that in a certain community, the average energy expenditure should be 2,100 calories per day

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Imagine a researcher posed a null hypothesis that in a certain community, the average energy expenditure should be 2,100 calories per day. He randomly sampled 100 people in that community. After he computed the t value by calculated a two-tailed t-statistic, he found that the probability value was 0.10. Thus, he concluded:

a. The average energy expenditure was bigger than 2,100 calories per day.

b. The average energy expenditure was smaller than 2,100 calories per day.

c. He could not reject the null hypothesis that the average energy expenditure was 2,100 calories per day.

d. The average energy expenditure was either more than 2,100 calories per day or less than 2,100 calories per day.