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)
360°/60 = 6
25 x 6 = 150°
18 x 6 = 108°
15 x 6 = 90°
2 x 6 = 12°
then draw a pi chart with these angles
hope this helps! please mark branliest?
Answer:
127 goes in the box
Step-by-step explanation:
I hope this helps you.
If you don't have to use all the letters then you can say greed, red
Answer: Hope this helps, please consider making me Brainliest. See below.
Step-by-step explanation:
Let's solve for both by plugging in 5 for x:
Uber Bars: 3 + 1.59x --> 3 + 1.59(5) = 3 + 7.95 = 10.95
Bars Express: 0.99 + 1.99x --> 0.99 + 9.95 --> 10.94
Bars Express is cheaper by one cent lol.
Hope this helps, please consider making me Brainliest.
