K A researcher was interested in comparing the resting pulse rates of people who exercise regularly and people who do not exercise regularly. Independent simple random samples were obtained of 16 people aged 30-40 who do not exercise regularly and 12 people aged 30-40 who do exercise regularly. The resting pulse rate (in beats per minute) of each person Do not Exercise Do Exercise x₁ =72.9 x₂=68.5 $₁=10.2 -8.6 was recorded. The summary statistics are given to the right. Assume the requirements for application of the pooled t-interval procedure are satisfied and use this procedure to find a 90% confidence interval for the difference between the mean pulse rate of people who do not exercise regularly and the mean pulse rate of people who exercise regularly. Round to two decimal places. n, 16 n₂ =12 OA. -1.83 to 10.63 beats per minute OB. 0.39 to 8.41 beats per minute OC -0.40 to 9.20 beats per minute OD. -2.48 to 11.28 beats per minute la

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K
A researcher was interested in comparing the resting pulse rates of people who exercise regularly and people who do not exercise
regularly. Independent simple random samples were obtained of 16 people aged 30-40 who do not exercise regularly and 12 people
aged 30-40 who do exercise regularly. The resting pulse rate (in beats per minute) of each person
Do not Exercise Do Exercise -
x₁ =72.9 x₂=68.5
$₁=10.2
-8.6
was recorded. The summary statistics are given to the right. Assume the requirements for application of the pooled t-interval procedure are satisfied and use this
procedure to find a 90% confidence interval for the difference between the mean pulse rate of people who do not exercise regularly and the mean pulse rate of people
who exercise regularly. Round to two decimal places.
n, 16
n₂ =12
OA. -1.83 to 10.63 beats per minute
OB. 0.39 to 8.41 beats per minute
OC -0.40 to 9.20 beats per minute
OD. -2.48 to 11.28 beats per minute
27
Transcribed Image Text:K A researcher was interested in comparing the resting pulse rates of people who exercise regularly and people who do not exercise regularly. Independent simple random samples were obtained of 16 people aged 30-40 who do not exercise regularly and 12 people aged 30-40 who do exercise regularly. The resting pulse rate (in beats per minute) of each person Do not Exercise Do Exercise - x₁ =72.9 x₂=68.5 $₁=10.2 -8.6 was recorded. The summary statistics are given to the right. Assume the requirements for application of the pooled t-interval procedure are satisfied and use this procedure to find a 90% confidence interval for the difference between the mean pulse rate of people who do not exercise regularly and the mean pulse rate of people who exercise regularly. Round to two decimal places. n, 16 n₂ =12 OA. -1.83 to 10.63 beats per minute OB. 0.39 to 8.41 beats per minute OC -0.40 to 9.20 beats per minute OD. -2.48 to 11.28 beats per minute 27
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