SOLUTION: An average computer mouse inspector can inspect 45 mice per hour with a population standard deviation of 14 mice per hour. The 44 computer mice inspectors at a particular factory c

Question 765195: An average computer mouse inspector can inspect 45 mice per hour with a population standard deviation of 14 mice per hour. The 44 computer mice inspectors at a particular factory can only inspect 38 mice per hour. Does the company have reason to believe that these inspectors are slower than average at α = 0.10?
Show work, thanks
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
An average computer mouse inspector can inspect 45 mice per hour with a population standard deviation of 14 mice per hour. The 44 computer mice inspectors at a particular factory can only inspect 38 mice per hour. Does the company have reason to believe that these inspectors are slower than average at α = 0.10?
----------
Ho: u = 45
Ha: u < 45
-------
z(38) = (38-45)/[14/sqrt(44)] = -3.3166
-----
p-value = P(z < -3.3166) = 0.00046
-----
Conclusion: Since the p-value is less than 10%,reject Ho at the 10% level
of significance.
----
Cheers,
Stan H.
===========
RELATED QUESTIONS
An average computer mouse inspector can inspect 45 mice per hour with a population... (answered by jim_thompson5910)

An average computer mouse inspector can inspect 60 mice per hour. The 48 computer mice... (answered by stanbon)

An average computer mouse inspector can inspect 50 mice per hour. The 48 computer mice... (answered by yuendatlo)

. An average computer mouse inspector can inspect 40 mice per hour with a population (answered by stanbon)

An average computer mouse inspector can inspect 40 mice per hour with a population... (answered by stanbon)

A certain breed of mouse was introduced onto a small island with an initial population of (answered by ikleyn)

A cage of lab mice contains 10 healthy mice and some infected mice infected with a deadly (answered by Cromlix)

The population of mice in a particular area is growing exponentially. on January 1, there (answered by stanbon)

The mass of a species of mouse commonly found in houses is normally distributed with a... (answered by ewatrrr)