Concept explainers
Smartphones Based on an LG smartphone survey, assume that 51% of adults with smartphones use them in theaters. In a separate survey of 250 adults with smartphones, it is found that 109 use them in theaters.
a. If the 51% rate is correct, find the probability of getting 109 or fewer smartphone owners who use them in theaters.
b. Is the result of 109 significantly low?
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