According to recent study, 176 of 406 technology CEOs from around the world resp

Question

According to recent study, 176 of 406 technology CEOs from around the world responded that technological advances will transform their business and 81 responded that resource scarcity and climate change will transform their business. Complete parts (a) through (c) below. a Construct a 90% confidence interval estimate for the population proportion of tech CEOs who indicate technological advances as one of the global trends that will transform their business. (Round to four decimal places as needed)

Explanation / Answer

Sol:

calculate sample proportion

p^=x/n=successes/total=176/496

=0.3548

z alpha/2 for 90%=1.645

confience interval for proportion is given by

={0.3548-1.645(sqrt(0.3548(1-0.3548/496),0.3548+1.645(sqrt(0.3548(1-0.3548/496)}

=0.3195,0.3901

lower limit 0.3195

upper limit=0.3901

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