To estimate the average number of customers entering and buying at the supermarket, the supervisor of that supermarket estimated the number of customers visiting every 5 minutes. She randomly selects 5- min intervals and counts the number of arrivals at the supermarket. The figures 58, 32, 41, 47, 56, 80, 45, 29, 32, and 78 were obtained and tallied. The analysts assume that the number of arrivals is normally distributed. Based on these data, find the point estimate,

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