Answer:
a, b. c, e
Step-by-step explanation:
Answer:
-6m+3-n
Step-by-step explanation:
-3 x 2m = - 6m
-3 x - 1=3
Answer:
a
Step-by-step explanation:
.....................
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)
Do 2x6=12×3 since there is 3 packages 2 rows and 6 in each row
