Answer:
D) The z-statistics would be different.
Step-by-step explanation:
Confidence Interval can be calculated using M±ME where
- M is the sample mean
- ME is the margin of error from the mean
An margin of error (ME) from the mean can be calculated using the formula
ME=
where
- z is the corresponding z-statistic in the given confidence level
- s is the population standard deviation
If 95% and 98% confidence intervals were calculated from the same sample data, then M, s and N are same.
is called standard error. Since s and N are same the standard errors would also be same.
But, two tailed z-statistic for 95% confidence level is ≈1.96 where for 98% it is ≈2.33
How to factor 175:
Find the factors of 175:
1, 5², 7
**Remember that factoring by prime numbers will get the job done more efficiently!**
Hope this helps!
Answer:
The sandwich cost $5.75
Step-by-step explanation:
9 = s + 3.25
-3.25 -3.25
5.75 = s