Amanufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 420.0420.0 gram setting. it is believed that the machine is underfilling the bags. a bag sample had a mean of 417.0417.0 grams. a level of significance of 0.010.01 will be used. state the hypotheses. assume the variance is known to be 576.00576.00. enter the hypotheses:

: μ=420 gram

: μ≠420 gram

we fail to reject the null hypothesis at 0.01 significance

Step-by-step explanation:

Let μ be the mean value for the bag filling machine. Then

: μ=420 gram

: μ≠420 gram

z-score of the sample mean can be calculated as:

z= where

then z= =-0.718

since p(z)=  0.858 > 0.01 we fail to reject the null hypothesis.

it should be a and d. lmk if i'm wrong xd

sup

step-by-step explanation: