-21.8+18.3
or 18.3-21.8
or the answer which is -3.5
Answer:
86
X.06
_____
516
+ 0000
_________
05.16
Step-by-step explanation:
Using confidence interval concepts, it is found that:
a) The point estimate is the sample mean.
b) The confidence interval is: 
c) If $1411 is between the bounds of the interval yes, otherwise no.
--------------
- At item a, it asks to provide a point estimate for the population mean, which is the sample mean

--------------
Item b:
- In the spreadsheet, it is possible to find the <em>standard deviation for the sample</em>, thus, the t-distribution is used.
- The confidence interval will be given by:

In which:
is the sample mean.- T is the critical value, from the t-distribution, with a two-tailed area of
and n-1 degrees of freedom. - s is the standard deviation for the sample.
- n is the sample size.
--------------
Item c:
We have to check if 1411 is between
and
.
- If it is, the interval includes the National Average, otherwise, it does not.
A similar problem is given at brainly.com/question/24232455
Answer:
2
i think
Step-by-step explanation:
Answer:
for question 1 the answer is 1.5 cm
for question 2 the answer is 0.75 cm
for question 3 the answer is 2.3 inches
for question 4 the answer is 3.3 inches
for question 5 the answer is 4 cm
for question 6 the answer is 0.75 inches