Question: Identify the following as either matched pair or independent samples. Also identify the experimental units, treatments, and response in each case. (a) Twelve persons are

Identify the following as either matched pair or independent samples. Also identify the experimental units, treatments, and response in each case.
(a) Twelve persons are given a high-potency vitamin C capsule once a day. Another twelve do not take extra vitamin C. Investigators record the number of colds in 5 winter months.
(b) One self-fertilized plant and one cross-fertilized plant are grown in each of 7 pots. Their heights are measured after 3 months.
(c) Ten newly married couples are interviewed. Both the husband and wife respond to the question, "How many children would you like to have?"
(d) Learning times are recorded for 5 dogs trained by a reward method and 3 dogs trained by a reward-punishment method.

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