Fatimah wants to build a one-sample z interval to
estimate the proportion of students at...
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Mathematics, 01.04.2020 19:50 cgratz5106
Fatimah wants to build a one-sample z interval to
estimate the proportion of students at her school who ate
breakfast every day last week with 90% confidence. She
takes a random sample of 75 students and finds that 20
ate breakfast every day last week.
What critical value z* should Fatimah use to construct
this confidence interval?
A) z* = 1.282
B) z* = 1.645
C) z* = 1.96
D) z* = 2.576
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