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A preacher would like to establish that of people who pray, less than 80% pray for world peace. In random sample of 110 persons, 77 of them said that when they pray, they pray for world peace. Test at 10% level of significance.

User Omer Mazig
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based from your question i found this for you 
A preacher would like to establish that of people who pray, less than 80% pray for-example-1
User Tennesha
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