Math Problem Statement
Based on a smartphone survey, assume that 52% of adults with smartphones use them in theaters. In a separate survey of 264 adults with smartphones, it is found that 134 use them in theaters. a. If the 52% rate is correct, find the probability of getting 134 or fewer smartphone owners who use them in theaters. b. Is the result of 134 significantly low? Question content area bottom Part 1
Solution
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Math Problem Analysis
Mathematical Concepts
Binomial Distribution
Normal Approximation
Z-score
Probability
Formulas
Mean (μ) = n * p
Standard Deviation (σ) = sqrt(n * p * (1 - p))
Z = (X - μ) / σ
Theorems
Central Limit Theorem
Normal Approximation to Binomial Distribution
Suitable Grade Level
College Statistics
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