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Pinecrest Academy conducted a health and fitness survey on a random sample of its 36 high school seniors. Below is the table of the resting heart rates (in beats per minute) of the participants: Resting Heart Rates (beats per minute): 58 67 76 65 72 71 73 68 66 69 78 64 61 63 74 70 71 69 62 60 77 59 65 64 66 58 67 70 72 63 68 69 71 75 62 60 a) Estimate, with 92% confidence, the proportion of all seniors at Pirrecrest Academy who have a resting heart rate of less than 70 beats per minute. b) How would the width of the interval in Part a) change if you wanted to be 95% confident, holding all other values constant? c) How would the width of the interval in Part a) change if we decreased the sample size

Pinecrest Academy conducted a health and fitness survey on a random sample of its 36 high school seniors. Below is the table of the resting heart rates (in beats per minute) of the participants: Resting Heart Rates (beats per minute): 58 67 76 65 72 71 73 68 66 69 78 64 61 63 74 70 71 69 62 60 77 59 65 64 66 58 67 70 72 63 68 69 71 75 62 60 a) Estimate, with 92% confidence, the proportion of all seniors at Pirrecrest Academy who have a resting heart rate of less than 70 beats per minute. b) How would the width of the interval in Part a) change if you wanted to be 95% confident, holding all other values constant? c) How would the width of the interval in Part a) change if we decreased the sample size

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.5: Interpreting Data
Problem 1C
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Pinecrest Academy conducted a health and fitness survey on a random sample of its 36 high school seniors. Below is the table of the resting heart rates (in beats per minute) of the participants: Resting Heart Rates (beats per minute): 58 67 76 65 69 78 62 60 70 72 63 68 72 71 73 68 66 64 61 63 74 70 71 69 77 59 65 64 66 58 67 60 69 71 75 62 a) Estimate, with 92% confidence, the proportion of all seniors at Pirrecrest Academy who have a resting heart rate of less than 70 beats per minute. b) How would the width of the interval in Part a) change if you wanted to be 95% confident, holding all other values constant? c) How would the width of the interval in Part a) change if we decreased the sample size to 30 seniors, holding all other values constant? D
Transcribed Image Text:Pinecrest Academy conducted a health and fitness survey on a random sample of its 36 high school seniors. Below is the table of the resting heart rates (in beats per minute) of the participants: Resting Heart Rates (beats per minute): 58 67 76 65 69 78 62 60 70 72 63 68 72 71 73 68 66 64 61 63 74 70 71 69 77 59 65 64 66 58 67 60 69 71 75 62 a) Estimate, with 92% confidence, the proportion of all seniors at Pirrecrest Academy who have a resting heart rate of less than 70 beats per minute. b) How would the width of the interval in Part a) change if you wanted to be 95% confident, holding all other values constant? c) How would the width of the interval in Part a) change if we decreased the sample size to 30 seniors, holding all other values constant? D
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