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Aeertain brand of automobile tire has a mean life span of 39,000 miles and a standard deviation of 2,300 miles. (Assume the life spans at the tires have a bell-shaped distribution.) {a} The life spans of three randemlglr selected tires are 34,000 miles, 3?,000 miles, and 32,000 miles. Find the zsepre that eerrespnnds to each life span. For the life span of 34,000 miles, zsepre is El. [Round to the nearest hundredth as needed.) The ages of the winners of a cycling tournament are approximately bellshaped. The mean age is 2?.3 years, with a standard deviation of 3.5 years. The winner in one recent year was 23 years old. {a} Transform The age to a z-score. {b} Interpret the results. {c} Determine whether the age is unusual. {a} Transform The age to a z-score. 2=D [Type an integer or decimal rounded to two decimal places as needed}