OpenStax, Statistics §10.3 Comparing Two Independent Population Proportions · Try It 1 · Statistics · Hypothesis testing
Comparing Two Independent Population Proportions · Try It 1
Two types of valves are being tested to determine if there is a difference in pressure tolerances. Fifteen out of a random sample of 100 of Valve A cracked under 4,500 psi. Six out of a random sample of 100 of Valve B cracked under 4,500 psi. Test at a 5 percent level of significance.
OpenStax, Statistics · §10.3 Comparing Two Independent Population Proportions · Try It 1
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