At the Olympic level of competition, even the smallest factors can make the difference between winning and losing. For example,
Pelton (1983) has shown that Olympic marksmen shoot much better if they fire between heartbeats, rather than squeezing the trigger during a heartbeat. The small vibration caused by a heartbeat seems to be sufficient to affect the marksman’s aim. Olympic marksmen fire a series of rounds while a researcher records heartbeats. For each marksman, a score is recorded for shots fired during heartbeats and for shots fired between heartbeats.
Answer the following questions.
1. Focus on the Descriptive Statistics output. Compare the means for the two conditions. Remember that the marksmen were measured twice, when they shot during heartbeats and when they shot between heartbeats. At which time, during or between, did they score more points?
2. Focus on the Paired Samples T-Test output. a. What is the value for t? b. What is p? p is the exact alpha that corresponds to the value for t. c. Should the researcher reject or retain the null hypothesis? d. Note that a paired-samples t-test is the same thing as a repeated- measures t-test.
3. If there’s a difference in shots taken during and between heartbeats, you should expect to see a significant difference between the two conditions. According to the findings reported in the output above, was there a significant difference between the scores for the marksmen during and between heartbeats?
Answer the following questions.
1. Focus on the Descriptive Statistics output. Compare the means for the two conditions. Remember that the marksmen were measured twice, when they shot during heartbeats and when they shot between heartbeats. At which time, during or between, did they score more points?
2. Focus on the Paired Samples T-Test output. a. What is the value for t? b. What is p? p is the exact alpha that corresponds to the value for t. c. Should the researcher reject or retain the null hypothesis? d. Note that a paired-samples t-test is the same thing as a repeated- measures t-test.
3. If there’s a difference in shots taken during and between heartbeats, you should expect to see a significant difference between the two conditions. According to the findings reported in the output above, was there a significant difference between the scores for the marksmen during and between heartbeats?
1 answer:
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Answer:
The maximum possible length, in centimeters, of the longest piece of rope is 134 cm
Step-by-step explanation:
Let the seven pieces be a,b,c,d,e,f,g
Average of 7 pieces of ropes =68
--A
We are given that the median length of a piece of rope is 84 centimeters.
We arrange the pieces in the ascending order
So, median will be the length of 4th piece
So, d = 84 cm
the length of piece a,b,c will be less than 84 and the value of e,f,g must be greater than or equal to 84
Let us suppose the length of a,b,c be x
Let us suppose the length of e,f be 84
The length of the longest piece of rope is 14 centimeters more than 4 times the length of the shortest piece of rope
So, g = 4x+14
Substitute the value in A
g = 4x+14=4(30)+14=134
Hence the maximum possible length, in centimeters, of the longest piece of rope is 134 cm
Answer:
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Step-by-step explanation:
Well to find the prime factor we make the prime factorization tree.
Look at the image below↓
<em>Thus,</em>
<em>the prime factorization of 4275 is </em>·
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<em>Hope this helps :)</em>
