lesentoe7770 lesentoe7770
  • 08-01-2024
  • Social Studies
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A random sample of U.S. adults taken 4 years ago indicated that 70% were optimistic about the economy. An economist believes that this percent has increased. What type of hypothesis is the economist testing?
a) Null hypothesis
b) Alternative hypothesis
c) Descriptive hypothesis
d) Predictive hypothesis

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