Which statement correctly describes the relation between a t-distribution and a standard normal distribution? *
1 point
The t-distribution has more area in the tails than a standard normal distribution.
As the sample size decreases, the standard deviation of the t-distribution decreases.
The standard normal distribution is centered at 0, while the t-distribution is centered at (n-1).
The t-distribution has a smaller standard deviation than the standard normal distribution.

answer: it's d

step-by-step explanation:

answer: the answer is e

step-by-step explanation:

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.