Answer:
The 80% confidence interval is
Step-by-step explanation:
From the question we are told that
The sample size is n = 23
The sample mean is
The standard deviation is
From the question we are told the confidence level is 80% , hence the level of significance is
=>
Generally from the normal distribution table the critical value of is
Generally the margin of error is mathematically represented as
=>
Generally 80% confidence interval is mathematically represented as
=>
Answer:
1. 8:5
2. 4:7:9
3. 4:3
4. 1:7
Step-by-step explanation:
1. they both are in 7 times table
2. both in 8 times table
3. 15 times table
4. 10 times table
It’s the same now in decimals is 2.35215804 it goes on
Answer:
Part a) The height that the liquid forms equals 2.56 feet.
Part b) The number of trucks required are 361.
Step-by-step explanation:
When all the liquid mixture is spilled from the storage tank it will accumulate over the floor space.
Thus we infer
where
is spilled volume of mixture =
is accumulated volume over the floor
Since the floor is smooth thus we conclude that the accumulated volume will form a prism of liquid with height 'h'
Thus
Equating both the volumes we get
Thus the height formed by the liquid equals 2.56 feet.
Part b)
We know that the basic relation between density, mass and volume is
Since it is given that the density of the liquid is 112% the density of water thus we have
Thus the weight of the volume of liquid is
Now since it is given that 1 truck can carry 9000 kg of liquid thus by proportion the number of trucks need to carry 3248000 kilograms of liquid equals
Answer:
1:4
Step-by-step explanation:
84-63=21
there are 21 milk chocolates in the box
ratio of milk chocolates to total number of chocolates=21:84
simplify that=1:4