Answer:
The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.
Step-by-step explanation:
We have that to find our
level, that is the subtraction of 1 by the confidence interval divided by 2. So:

Now, we have to find z in the Ztable as such z has a pvalue of
.
So it is z with a pvalue of
, so 
Now, find M as such

In which
is the standard deviation of the population and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 67 - 4.54 = 62.46 ounches.
The upper end of the interval is the sample mean added to M. So it is 67 + 4.54 = 71.54 ounces.
The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.
<u>Answer</u>
20%
<u>Explanation</u>
let the cost of tie = x
Then cost of a pair of pants = (100+50)%x
= 150%x
= 1.5x
The cost of shirt = (100+25)%x
= 125%x
= 1.25x
(1.5x - 1.25x)/1.25x × 100
0.25x/1.25x × 100
0.2 × 100 = 20%
3:4
180 / 6 = 30 / 10 = 3
240 / 6 = 40 / 10 = 4
3 = website sales
4 = store sales
website : store
=
3 : 4
Answer:
V=28.203 yd.
Step-by-step explanation:
V= 1/3 Bh. B= 1/2(l×w) h= 7.9
V= 1/3( 10.71×7.9) B= 1/2(3.4×6.3) l=3.4
V=1/3(84.609) B= 1/2(21.42) w=6.3
V=28.203 B= 10.71