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Ward Reeves
06/03/2024 · Middle School

2) According to a fitness survey in 2023, approximately \( 30 \% \) of people have a gym membership. A sample of 23 people is studied. Use Table A and write all probabilities to three decimal places and all other values to two decimal places. a) What is the sample size? b) What is the probability of success? d) Find the probability that exactly 8 people have a gym membership. e) Find the probability that at least 12 people have a gym membership. f) Find the probability that less than 5 people have a gym membership. g) Calculate the mean. h) Calculate the standard deviation.

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a) Sample size: 23 b) Probability of success: 0.30 d) Probability of exactly 8 people: 0.002 e) Probability of at least 12 people: 0.134 f) Probability of less than 5 people: 0.578 g) Mean: 6.90 h) Standard deviation: 2.20

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