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Mathematics Clinic => Statistics => Topic started by: joblessjake on Aug 31, 2019

Title: A truck company wants on-time delivery for 98% of the parts they order from a metal manufacturing ...
Post by: joblessjake on Aug 31, 2019

A truck company wants on-time delivery for 98% of the parts they order from a metal manufacturing plant. They have been ordering from Hudson Manufacturing but will switch to a new, cheaper manufacturer (Steel-R-Us) unless there is evidence that this new manufacturer cannot meet the 98% on-time goal. As a test the truck company purchases a random sample of metal parts from Steel-R-Us, and then determines if these parts were delivered on-time. Which hypothesis should they test?
◦ H₀: p = 0.98
H_A: p > 0.98
◦ H₀: p > 0.98
H_A: p = 0.98
◦ H₀: p = 0.98
H_A: p ≠ 0.98
◦ H₀: p = 0.98
H_A: p < 0.98
◦ H₀: p < 0.98
H_A: p > 0.98

Title: A truck company wants on-time delivery for 98% of the parts they order from a metal manufacturing ...
Post by: mochi09 on Aug 31, 2019

H₀: p = 0.98
H_A: p < 0.98

Title: Re: A truck company wants on-time delivery for 98% of the parts they order from a metal manufacturin
Post by: mlove02 on Mar 23, 2020

thank you!