I need assistance on q. 1 & 2.
Question 1
0/2 pts 96 Details
Score on last try: 0 of 2 pts. See Details for more.
You can retry this question below.
The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). The mean maximum oxygen uptake for elite athletes has been found to be 65 with a standard deviation of 8.5. Assume that the distribution is approximately normal. Round your answers to 4 decimal places.
Hint: Find the probability a normal random variable is in the right tail or the left tail.
Find the probability that an elite athlete has a maximum oxygen uptake of at least 89.7 ml/kg. 0.002
Find the probability that an elite athlete has a maximum oxygen uptake of at most 56.5 ml/kg. 0.1525
Question Help: Message instructor Post to forum
Submit Question
Question 2
0/1pt 100 Details
For a continuous random variable X that is normally distributed with mean = 58.4, and standard deviation = 10.4, find P29, the percentile value that divides the area under the density curve into 0.29 to the left and 0.71 to the right.
P29 =
(Round the answer to 2 decimal places)
Question Help: Video 1 Video 2 Written Example 1 Message instructor Post to forum
Submit Question
Question 3
1/1 pt 94-99 Details
Score on last try: 1 of 1 pts. See Details for more.
The amount of time to complete a physical activity in a PE class is approximately normally distributed with a mean of 35.3 seconds and a standard deviation of 6.9 seconds.
a) What is the probability that a randomly chosen student completes the activity in less than 28.2 seconds? 0.151
b) What is the probability that a randomly chosen student completes the activity in more than 39.3 seconds? 0.280
c) What proportion of students take between 30.3 and 38.4 seconds to complete the activity? 0.438
d) 75% of all students finish the activity in less than 40.24 seconds.
Question Help: Message instructor Post to forum