Mathematics, 09.01.2020 03:31, sustaitaj2022
5. a researcher gathers data on how long teenagers spend on individual cell phone calls (in number of minutes). suppose the research determines that these calls have a mean
10 minutes and standard deviation 7 minutes.
a. suppose the researcher also claims that the distribution of the call lengths follows a normal distribution. sketch a graph displaying this distribution. be sure to add a scale and
to label your horizontal axis.
b. using your graph, shade the area that represents the probability that a randomly selected call lasts more than 12 minutes. is this probability closer to 0.50 or to 0.05?
c. after looking at the above mean and standard deviation of the call length data, a second researcher indicates that she does not think that a normal distribution is an appropriate
model for the call length distribution. which researcher (the first or the second) do you think is correct? justify your choice.
Answers: 2
Mathematics, 20.06.2019 18:04, anglekhan101
On a coordinate grid, point p is at (4, 3) and point r is at (−2, −5). points q and s are a reflection of both points across the x-axis. what are the coordinates of q and s? q(−4, 3), s(2, −5) q(4, −3), s(−2, 5) q(−4, −3), s(2, 5) q(−4, 3), s(−2, 5) ; -; i can't figure it out, if someone can me with the answer, that would be nice
Answers: 2
Mathematics, 21.06.2019 17:00, kianarice55otaivh
During your cycling trip, you and your friends often stayed in hostels. the prices of these are listed below. hostel standard room (price per night) with breakfast (price per night) super sleep hostels £22.45 £28.65 normandy nights £18.55 £25 zzzola hostels £24.50 £30.99 belgian beds £11.20 £18.55 night-time rest days ? £33 what is the range in cost for a single night, including both standard room prices and with breakfast prices?
Answers: 1
Mathematics, 21.06.2019 17:30, liamgreene90
Student price tickets to a movie are $1 and non student tickets are $2. 350 tickets are sold and the total amount made is $450. how many non student tickets were sold ? a) 100 b) 150 c) 200 d)250
Answers: 2
5. a researcher gathers data on how long teenagers spend on individual cell phone calls (in number o...
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