subject
Mathematics, 14.04.2021 21:40 saraagracee

When Nachelle runs the 400 meter dash, her finishing times are normally distributed with a mean of 87 seconds and a standard deviation of 1.5 seconds. Using the empirical rule, what percentage of races will her finishing time be between 84 and 90 seconds?

ansver
Answers: 1

Another question on Mathematics

question
Mathematics, 21.06.2019 13:40
Acertain standardized? test's math scores have a? bell-shaped distribution with a mean of 520 and a standard deviation of 105. complete parts? (a) through? (c)
Answers: 1
question
Mathematics, 21.06.2019 18:30
Mr. and mrs. wallace have decided to buy a car for $21,600. they finance $15,000 of it with a 5-year auto loan at 2.9% arp. what will be their monthly payment be? a. $268.20 b. $268.86 c. $269.54 d. $387.16 i need !
Answers: 1
question
Mathematics, 21.06.2019 21:40
If angle b measures 25°, what is the approximate perimeter of the triangle below? 10.3 units 11.8 units 22.1 units 25.2 units
Answers: 2
question
Mathematics, 22.06.2019 01:30
How do you write 0.5% as a fraction
Answers: 1
You know the right answer?
When Nachelle runs the 400 meter dash, her finishing times are normally distributed with a mean of 8...
Questions
question
Mathematics, 22.09.2020 20:01
question
Mathematics, 22.09.2020 20:01
question
Mathematics, 22.09.2020 20:01
Questions on the website: 13722361