Mathematics, 10.12.2020 16:40 endyrocks19
At a large regional collegiate women’s swim meet, an official records the time it takes each swimmer to swim 100 meters for all swimmers who compete in only one stroke category. The following table shows the mean times and corresponding standard deviations for the collegiate women at the swim meet for each of the four stroke categories. Stroke Category Mean 100 meter Time Standard Deviation Backstroke 55.6 seconds 0.70 seconds Breaststroke 63.3 seconds 0.92 seconds Butterfly 54.4 seconds 0.94 seconds Freestyle 50.2 seconds 0.76 seconds For each of the 4 stroke categories, consider a random variable representing the time of a randomly selected swimmer in that category. What is the standard deviation of the sum of the 4 random variables?
Answers: 2
Mathematics, 21.06.2019 20:30, AdanNava699
If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.
Answers: 1
Mathematics, 21.06.2019 21:30, celeste961
Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a, b and c integers and a> 1
Answers: 2
Mathematics, 21.06.2019 22:30, hala201490
Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.
Answers: 1
At a large regional collegiate women’s swim meet, an official records the time it takes each swimmer...
Mathematics, 11.05.2021 16:30
Physics, 11.05.2021 16:30
Mathematics, 11.05.2021 16:40
Mathematics, 11.05.2021 16:40