Question
In: Statistics and Probability
An athletics coach states that the distribution of player run times (in seconds) for a 100-meter...
An athletics coach states that the distribution of player run times (in seconds) for a 100-meter dash is normally distributed with a mean equal to 14.00 and a standard deviation equal to 0.2 seconds. What percentage of players on the team run the 100-meter dash in 14.44 seconds or faster? (Round your answer to two decimal places.)
Solutions
orchestra answered 1 year agoRelated Solutions
Reaction times are normally distributed with mean 100 seconds and standard deviation of 10 seconds. a)...
Reaction times are normally distributed with mean 100
seconds and standard deviation of 10
seconds.
a) What is the probability that a randomly chosen
individual has reaction time of more than 45 seconds?
b) In a random sample of 36 individuals from the above
population of reaction times, what is the probability that the
sample mean reaction time is more than 45 seconds
Times (in seconds) for the 100 freestyle and 100 backstroke were recorded for three top swimmers...
Times (in seconds) for the 100 freestyle and 100 backstroke were
recorded for three top swimmers on a university swim team: 46.17
and 50.05; 46.72 and 50.22; 46.89 and 52.95.
(a) Assuming these to be representative samples of all top
swimmers' times for the two events, use software to produce a 95%
confidence interval for the mean of the time differences, freestyle
minus backstroke, for the two events
The upper boundaries for a distribution of waiting times (in seconds) in a grocery store aisle...
The upper boundaries for a distribution of waiting times (in
seconds) in a grocery store aisle are 43, 54, 65, and 76. List the
value for each lower boundary in this distribution.
Lower
boundary
Upper
boundary
76
65
54
43
he upper boundaries for a distribution of waiting times (in seconds) in a grocery store aisle...
he upper boundaries for a distribution of waiting times (in
seconds) in a grocery store aisle are 44, 55, 66, and 77. List the
value for each lower boundary in this distribution.
Lower
boundary
Upper
boundary
upper boundaries are 77, 66, 55, 44
he upper boundaries for a distribution of waiting times (in seconds) in a grocery store aisle...
he upper boundaries for a distribution of waiting times (in
seconds) in a grocery store aisle are 49, 60, 71, and 82. List the
value for each lower boundary in this distribution.
Usain Bolt, a world champion sprinter, can run a 10-meter split in 0.82 seconds. Say you...
Usain Bolt, a world champion sprinter, can run a 10-meter split
in 0.82 seconds. Say you obtain a quadriceps muscle sample from
Usain Bolt and compare it to one from a 25-year-old male
long-distance runner. What differences do you expect to observe
between those two muscle samples? Select all that apply.
A) red and white muscle fibers of larger cross-sectional area in
Usain Bolt's leg muscles
B) more mitochondria in Usain Bolt's leg muscles
C) more fast-twitch fibers in Usain...
Table 12.22 gives the gold medal times for every other Summer Olympics for the women’s 100-meter...
Table 12.22 gives the gold medal times for every other Summer
Olympics for the women’s 100-meter freestyle (swimming).
Year
Time (seconds)
1912
82.2
1924
72.4
1932
66.8
1952
66.8
1960
61.2
1968
60.0
1976
55.65
1984
55.92
1992
54.64
2000
53.8
2008
53.1
Table 12.22
Estimate for the next Summer Olympics
2019. __________ Do you think this is a
good estimate? _____ (2 points)
Why or why not?
The home run percentage is the number of home runs per 100 times at bat. A...
The home run percentage is the number of home runs per 100 times
at bat. A random sample of 43 professional baseball players gave
the following data for home run percentages. 1.6 2.4 1.2 6.6 2.3
0.0 1.8 2.5 6.5 1.8 2.7 2.0 1.9 1.3 2.7 1.7 1.3 2.1 2.8 1.4 3.8 2.1
3.4 1.3 1.5 2.9 2.6 0.0 4.1 2.9 1.9 2.4 0.0 1.8 3.1 3.8 3.2 1.6 4.2
0.0 1.2 1.8 2.4 (a) Use a calculator with mean...
The home run percentage is the number of home runs per 100 times at bat. A...
The home run percentage is the number of home runs per 100 times
at bat. A random sample of 43 professional baseball players gave
the following data for home run percentages.
1.6
2.4
1.2
6.6
2.3
0.0
1.8
2.5
6.5
1.8
2.7
2.0
1.9
1.3
2.7
1.7
1.3
2.1
2.8
1.4
3.8
2.1
3.4
1.3
1.5
2.9
2.6
0.0
4.1
2.9
1.9
2.4
0.0
1.8
3.1
3.8
3.2
1.6
4.2
0.0
1.2
1.8
2.4
(a) Use a calculator with mean...
The home run percentage is the number of home runs per 100 times at bat. A...
The home run percentage is the number of home runs per 100 times
at bat. A random sample of 43 professional baseball players gave
the following data for home run percentages.
1.6
2.4
1.2
6.6
2.3
0.0
1.8
2.5
6.5
1.8
2.7
2.0
1.9
1.3
2.7
1.7
1.3
2.1
2.8
1.4
3.8
2.1
3.4
1.3
1.5
2.9
2.6
0.0
4.1
2.9
1.9
2.4
0.0
1.8
3.1
3.8
3.2
1.6
4.2
0.0
1.2
1.8
2.4
(a) Use a calculator with mean...
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