You wish to estimate, with 95% confidence, the population proportion of U.S. adults who want more funding for alternative energy. Your estimate must be accurate within 4% of the population proportion. a) No preliminary estimate is available. Find the minimum sample size needed. b) Find the minimum sample size needed, using a prior study that found that 78% of U.S adults want more funding for alternative energy. c) Compare the results from parts (a) and (b).

MATLAB: An Introduction with Applications
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You wish to estimate, with 95% confidence, the population proportion of
U.S. adults who want more funding for alternative energy. Your estimate must be accurate
within 4% of the population proportion.
a)
b)
c)
No preliminary estimate is available. Find the minimum sample size needed.
Find the minimum sample size needed, using a prior study that found that 78% of U.S adults want more funding for alternative energy.
Compare the results from parts (a) and (b).
Transcribed Image Text:You wish to estimate, with 95% confidence, the population proportion of U.S. adults who want more funding for alternative energy. Your estimate must be accurate within 4% of the population proportion. a) b) c) No preliminary estimate is available. Find the minimum sample size needed. Find the minimum sample size needed, using a prior study that found that 78% of U.S adults want more funding for alternative energy. Compare the results from parts (a) and (b).
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