-18? I didn’t know - numbers were squared..
Answer:
x-1=0 x=1
x+1=0 x= -1
x+5=0 x= -5
Step-by-step explanation:
Answer:
34-
Step-by-step explanation:
you just sum them up as easy as that
8:9 because you tak the square root of both
Answer:
A. Yes, the random condition for finding confidence intervals is met because np = 32 and n(1 − p) = 18, both of which are greater than 10.
E. Yes, the random condition for finding confidence intervals is met because the sample is a simple random sample.
Step-by-step explanation:
In order for the random conditioning to be valid, the following must be met:
- the sample taken is a simple random sample, i.e. each student had the same probability of being surveyed
- the sample size was sufficiently large, i.e. both np and n(1 - p) are larger than 10.
Since both conditions are met, then the confidence interval is valid. A valid confidence interval is one that has 95% chance of containing the total population's parameters.