subject
Mathematics, 13.05.2021 15:40 Cartucho1978

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: 2

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 19:30, tiwaribianca475
Cor d? ? me ? max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
Answers: 1
image
Mathematics, 21.06.2019 20:00, claudia3776
What does the sign of the slope tell you about a line?
Answers: 2
image
Mathematics, 21.06.2019 21:30, Harriche
The perimeter of a rectangular lot of land is 436 ft. this includes an easement of x feet of uniform width inside the lot on which no building can be done. if the buildable area is 122 ft by 60 ft, determine the width of the easement. select one: a. 9 feet b. 18 feet c. 4.5 feet d. 7 feet
Answers: 3
image
Mathematics, 22.06.2019 03:30, wolfking800
Georgia needs to buy flea treatment for her dog. pet store 1 is offering the flea treatment for 40 percent off plus an additional 25 percent off their regular price of $33. pet store 2 is offering the same flea treatment for 55 percent off plus an additional 5 percent off their regular price of $34. which location is offering the better price and how much cheaper is it? the flea treatment is $0.31 cheaper at pet store 2. the flea treatment is $1.05 cheaper at pet store 2. the flea treatment is $2.05 cheaper at pet store 1. the flea treatment is $2.36 cheaper at pet store 1.
Answers: 2
You know the right answer?
When Nachelle runs the 400 meter dash, her finishing times are normally distributed with a mean of...

Questions in other subjects: