The Minimum sample size table is attached below
Answer:
Step-by-step explanation:
From the question we are told that:
Confidence Interval
Variance
Generally going through the table the
Minimum sample size is
Answer:
0.1151
Step-by-step explanation:
Given that a laptop company claims up to 10.1 hours of wireless web usage for its newest laptop battery life. However, reviews on this laptop shows many complaints about low battery life. A survey on battery life reported by customers shows that it follows a normal distribution with mean 9.5 hours and standard deviation 30 minutes.
If X is the battery life then X is N(9.5, 0.5)
(we convert into one unit for calculations purpose here hours)
a) the probability that the battery life is at least 10.1 hours
=
we get the probability that the battery life is at least 10.1 hours is 0.1151
Answer:
it is c
Step-by-step explanation:
Answer:
Step-by-step explanation:
c^2 - a^2 = b^2
19^2 - 12^2 = b^2
361 - 144 = 217
= 14.7309198627
Round to the nearest hundredth = 14.73
Hope this helps!
Let's assume
number of nickels =n
number of dimes =d
we are given
total number of coins =9
so, we get
we know that
1 nickel =$ 0.05
and
1 dimes =$0.10
so, total amount is
we are given
total amount =$2.15
so, we get
so, we get system of equations as
................Answer