Mathematics, 02.10.2020 23:01 AutumnJoy12
STATISTICS AND PROBABILITY
2 The table shows the distances walked (in kilometers) by members of a
walking group in one week
Cumulative frequency
Distance, d (k/m)
0<d<3
3<d<6
6<d< 9
9<d<12
12 <d<15
Frequency
4
14
6
8
4
Cumulative frequency
a Copy and complete the table
b Construct a cumulative frequency curve to represent this data
c Find estimates for the median and quartiles,
d Find estimates for the range and interquartile range
Answers: 2
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Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?
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What is the absolute value of the complex number -4-sqrt2i
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There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?
Answers: 1
STATISTICS AND PROBABILITY
2 The table shows the distances walked (in kilometers) by members of a
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