Mathematics, 08.01.2020 23:31 DaylaReevaFEEVA5040

Example 1: use of and a graphing calculator to find normal probabilities
a swimmer named amy specializes in the 50-meter backstroke. in competition, her mean time for the event is 39.7 seconds, and the standard deviation of her times is 2.3 seconds.
assume that amy’s times are approximately normally distributed.
a. estimate the probability that amy’s time is between 37 and 44 seconds.
b. using z-scores and a graphing calculator and rounding your answers to the nearest thousandth, find the probability that amy’s time in her next race is between 37 and 44 seconds.
c. estimate the probability that amy’s time is more than 45 seconds.
d. using z-scores and a graphing calculator and rounding your answers to the nearest thousandth, find the probability that amy’s time in her next race is more than 45 seconds.
e. what is the probability that amy’s time would be at least 45 seconds?
f. using z-scores and a graphing calculator and rounding your answers to the nearest thousandth, find the probability that amy’s time in her next race is less than 36 seconds.

Answers: 2

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 14:30

Will mark brainliest with 20 points! the table shows how far object 1 traveled as a function of time. *time (seconds) - 2 4 6 8 *distance traveled (feet) - 18 36 54 72 the equation shows how far object 2 traveled in feet as a function of time in minutes. *f(x) = 10x which object traveled at a faster speed? justify your response.

Answers: 1

Answer

Mathematics, 21.06.2019 16:30

I’m which figure is point g an orthocenter

Answers: 1

Answer

Mathematics, 22.06.2019 00:00

Meg constructed triangle poq and then used a compass and straightedge to accurately construct line segment os, as shown in the figure below, which could be the measures of angles pos and angle poq?

Answers: 1

Answer

Mathematics, 22.06.2019 00:30

Paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.

Answers: 1

Answer

You know the right answer?

Example 1: use of and a graphing calculator to find normal probabilities
a swimmer named amy...

Questions