Given:
n = 20, sample size
xbar = 17.5, sample mean
s = 3.8, sample standard deiation
99% confidence interval
The degrees of freedom is
df = n-1 = 19
We do not know the population standard deviation, so we should determine t* that corresponds to df = 19.
From a one-tailed distribution, 99% CI means using a p-value of 0.005.
Obtain
t* = 2.8609.
The 99% confidence interval is
xbar +/- t*(s/√n)
t*(s/√n) = 2.8609*(3.8/√20) = 2.4309
The 99% confidence interval is
(17.5 - 2.4309, 17.5 + 2.4309) = (15.069, 19.931)
Answer: The 99% confidence interval is (15.07, 19.93)
Answer:

Step-by-step explanation:
given data;
B = 16m
b =8 m
height H = 4 m
length L = 32 m
volume of any right cylinder = (Area of bottom) \times (length)
Volume = A* L
The area of a trapezoid is



therefore volume is given as
volume = 48*32

Answer:
the answer is 20 , the equation is 110=2f+2(2f-5)
Step-by-step explanation:
brainlest ?
Sisi
68/4
17 m
panjang diag. Lainnya
akar 17^2 - 8^
15 mx 2
30 m
luas
1/2 x 30 x 16
240 m2
uang
yang diterima
200.000 x 240
<span> 48 juta rupiah</span>
Answer:
A <u>tree diagram</u> shows all possible outcomes of two or more events.
Each branch is a possible outcome and can be labelled with a probability.
<u>Step 1</u>: Draw lines (branches) to represent the first set of options (slacks). Write the outcomes on the ends of the branches (brown and black).
<u>Step 2</u>: Draw the next set of branches to represent the second set of options (sweaters). Write the outcomes on the ends of the branches (tan, red and white).
<u>Step 3</u>: Draw the final set of branches to represent the last set of options (shirts). Write the outcomes on the ends of the branches (white and gray).
We assume that the events in this scenario are <u>independent</u> so the probability of the first event happening has no impact on the probability of the second event or the third event happening. Therefore, the probabilities are:
- P(brown slacks) = 1/2
- P(black slacks) = 1/2
- P(tan sweater) = 1/3
- P(red sweater) = 1/3
- P(white sweater) = 1/3
- P(white shirt) = 1/2
- P(gray shirt) = 1/2
Write these on the branches.