Clark Heter is an industrial engineer at Lyons Products. He would like to determine whether there are more units produced on the night shift than on the day shift. A sample of 60 day-shift workers showed that the mean number of units produced was 341, with a population standard deviation of 26. A sample of 69 night-shift workers showed that the mean number of units produced was 346, with a population standard deviation of 35 units.

At the .10 significance level, is the number of units produced on the night shift larger?

1.This is a one two-tailed test.
2.The decision rule is to reject H0: μd ≥ μn if z <
3.The test statistic is z =
4.What is your decision regarding H0?

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.

17.08

correct me if i am wrong.

- click here to get an answer to your question ✍ 75 i will mark one of the angles formed by two

step-by-step explanation: