1. A veterinarian wishes to compare the number of times race horses are reported
ID: 3155667 • Letter: 1
Question
1. A veterinarian wishes to compare the number of times race horses are reported to be lame during a 12-month period compared with similar horses that are not raced. The researcher decides to pair horses based on age, breed, and area where the horse is trained or exercised. The researcher obtains 20 horses, 10 that are raced and 10 that are not raced. The researcher calculates a 95% confidence interval for the 10 horses that raced, for the 10 horses that are not raced, and for the difference in the number of times paired horses that raced. What should the researcher do?
1)The researcher should take the difference in the upper and lower limits of the confidence intervals for the 10 horses raced and for the 10 horses not raced.
2)The researcher should report the confidence interval for the paired differences.
3)The researcher should report the two confidence intervals for the 10 horses raced and for the 10 horses not raced.
4)All of the above
Explanation / Answer
A veterinarian wishes to compare the number of times race horses are reported to be lame during a 12-month period compared with similar horses that are not raced. The researcher decides to pair horses based on age, breed, and area where the horse is trained or exercised. The researcher obtains 20 horses, 10 that are raced and 10 that are not raced. The researcher calculates a 95% confidence interval for the 10 horses that raced, for the 10 horses that are not raced, and for the difference in the number of times paired horses that raced. What should the researcher do?
2)The researcher should report the confidence interval for the paired differences.
OPtion 2) is correct.
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