Answer:
the mean of the population is?
b. significantly greater than 3.
Step-by-step explanation:
Given that the manager of an online shop wants to determine whether the mean length of calling time of its customers is significantly more than 3 minutes
H0:
H1:
(Right tailed test for checking mean)
n = Sample size = 100
Sample mean = 3.1
s = Sample std dev = 0.5
Std error of mean =
Mean difference = 0.10
Since only sample std dev is used, we can use t test only
t = mean diff/std error =
df = 99
p value = 0.02412
Since p < 0.05 our significant level, we reject null hypothesis
The conclusion is
the mean of the population is?
b. significantly greater than 3.
Answer:
396
Step-by-step explanation:
0.03n=27
n=27/0.03=900
900*0.44=396
Multiplicity 2 means you're using that same root twice. So we will FOIL out (x+1)(x+1)(x-3). Doing that multiplying gives us
. Combining like terms gives us the third degree polynomial we are looking for:
5 + 2h = total money spent