The average time to complete a 10K race for a female runner is 64.61 minutes with a standard deviation of 5.18 minutes. Sarah completes her first 10K race in 58.24 minutes. What is Sarah’s z-score? (Round your answer to 2 decimal places.)

Below is the standard deviation for extreme 10k finish times for a randomly selected group of women and men. Choose the statement that best summarizes the meaning of the standard deviation. Women: s0.16 Men: s = 0.25 OA. The distribution of men's finish times is less varied than the distribution of women's finish times. OB. On average, men's finish times will be 0.25 hours faster than the overall average finish time OC. On average, women's finish times will be 0.16 hours less than men's finish times. OD. The distribution of women's finish times is less varied than the distribution of men's finish times.

Suppose the time to complete a 200-meter backstroke swim for female competitive swimmers is normally distributed with a mean μ = 141 seconds and a standard deviation σ = 7 seconds.What is the completion time for the 200-meter backstroke for a female with a z-score of −1.64? (Round answer to 1 decimal place.) 141.0 129.5 130.8 152.5

A participant in a marathon runs at an average speed of 4 metres per second.  What distance will she cover in 10 minutes?150 m240 m40 m2.4 km2In part of a race, a car covers a distance of 2 km at an average speed of 40 m/s.  How long did it take to complete this part of the race?20 s80 s50 s0.05 s3A man jogs 200 m in one minute, rests for 30 seconds, and then jogs a further 300 m in two minutes.  Calculate his average speed for this journey.2.50 m/s3.33 m/s2.38 m/s2.92 m/s4A man jogs 200 m at a constant speed for one minute, rests for 30 seconds, and then jogs a further 300 m at a constant speed for two minutes.  Calculate his maximum speed for this journey.2.92 m/s2.38 m/s2.50 m/s3.33 m/s5Which of the following is the approximate speed at which a cyclist might travel, on average?5 m/s0.5 m/s50 m/s500 m/s6In the lab, a rubber bung is attached to a piece of string and is swung around in a circular path.  The rubber bung moves around its circular path at a steady rate of one complete revolution per second.  Which of the following statements correctly describes its motion?Its velocity is constant but its speed is always changingBoth its speed and its velocity are constantIts speed is constant but its velocity is always changingBoth its speed and its velocity are always changing

An analyst has timed a metal-cutting task for 50 cycles. The average time per cycle was 11.9 minutes, and the standard deviation was 1.32 minutes for a worker with a performance rating of 130 percent. Assume an allowance of 17 percent of task time. Calculate the standard time for this task. (Do not round intermediate calculations. Round the final answer to 2 decimal places.)

If a marathon runner averages 9.5 mi/h, how long does it take him or her to run a 26.22 mi marathon?