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is question 4 -> Euan question 6 -> Felicia question 10 ->buffalo grass; it has the greater corresponding raw score. question 22 -> Company A is more likely its z-score of 2.82 is greater
Euan's z score is at the greatest distance from the mean. You did not say which test. That is part of the question. @Daniellelovee
Question 6. The greatest improvement is not by Felicia. Felicia's z-score went from 1.25 to 1.5, and increase of 0.25. Who has the greatest improvement?
....an increase of 0.25*
and are the rest correct then?
you there? @kropot72
Yes, Dave improves from -0.5 to 1. Question 22. The lower value of z-score for 43 lozenges corresponds to a higher probability of producing a packet of 43 lozenges. When the cumulative probabilities are compared, the cumulative probability of Company B producing packets with more than 43 lozenges is 0.0028, whereas the cumulative probability of Company A producing packets with more than 43 lozenges is 0.0024.
im confused with 22
is company B more likely with a score of -2.77?
Look at it this way, if the z-score of Company B for 43 lozenge packets was 1, and the z-score of Company A for 43 lozenge packets was 2.82, which company would be more likely to produce a packet of 43 lozenges? BTW the actual z-score for Company B is 2.77.
ok so then would it mean that A is closer or that B is closer?
closer to the mean?
The z-score of Company B is closer to the mean.
alright thank you :)
and are the rest correct?
You're welcome :) For question 10, I found the growing period for Bermuda grass to be 11.75 days and for Buffalo grass 15.25 days.