subject
Mathematics, 10.03.2021 03:30 544620

After collecting all of the data, you determine that the finishing times are normally distributed with a mean of 2.8 hours and a standard deviation of .4 hour. a. what is the probability that a randomly chosen athlete completed the walk between 2 and 3.2 hours?
b. what is the probability that two randomly chosen athletes completed the walk in 3.6 hours or more?
c. what is the probability that four randomly chosen athletes completed the walk between 2 and 2.8 hours?

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 15:30
Each of the four sides of a swimming pool measures 9 meters. the pool is 5 meters deep. how much water will be needed to fill it completely? a. 45 cubic meters b. 81 cubic meters c. 225 cubic meters d. 405 cubic meters reset next
Answers: 1
question
Mathematics, 21.06.2019 21:00
Write the equation in logarithmic form m^x=n
Answers: 1
question
Mathematics, 21.06.2019 23:30
If you measured the width of a window in inches and then in feet with measurement would you have the greater number of units
Answers: 3
question
Mathematics, 21.06.2019 23:40
Statement reason 1. δabc is similar to δced. given 2. 3. definition of slope 4. slope of slope of definition of slope 5. slope of × slope of multiplying the slopes 6. slope of × slope of substitution property of equality 7. slope of × slope of simplifying the right side the table contains the proof of the relationship between the slopes of two perpendicular lines. what is the reason for statement 2? a. parallel line segments that meet a common perpendicular line are proportional in length. b. the lengths of vertical and horizontal sides in congruent triangles are in a common ratio. c. trigonometric identities determine the lengths of the legs in a right triangle. d. corresponding side lengths in similar triangles are proportional in length.
Answers: 2
You know the right answer?
After collecting all of the data, you determine that the finishing times are normally distributed wi...
Questions
question
English, 17.09.2019 13:20
Questions on the website: 13722363