Final answer:
The probability of assembling the product in 7 minutes or more is calculated based on a uniform distribution between 6 and 10 minutes, resulting in a probability of 0.75.
Step-by-step explanation:
The probability of assembling the product in 7 minutes or more when the assembly time is uniformly distributed between 6 and 10 minutes can be calculated as follows:
The total time range is 10 - 6 = 4 minutes. The time range from 7 minutes to 10 minutes is 10 - 7 = 3 minutes. Since the distribution is uniform, the probability is the length of the time interval of interest (3 minutes) divided by the total length of time (4 minutes).
Thus, the probability is 3/4 which equals 0.75.
Therefore, the correct answer is A. 0.75.