Answer:
Step-by-step explanation:
first remove the parentheses
then add the like terms
lastly reorder the terms
the question is not so clear
is it (x+3)/3 or what you have written is correct
Step-by-step explanation:
Answer:
m<-8 or (-∞,-8) hope this helps
Both methods assume a normal distribution of the data, but the z-tests are most useful when the standard deviation is known.
OR u can use , z-tests are used when we have large sample sizes (n > 30), whereas t-tests are most helpful with a smaller sample size (n < 30). Both methods assume a normal distribution of the data, but the z-tests are most useful when the standard deviation is known.
