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
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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