What is the test statistic for this significance test? O t= -2.89
O z= -2.89
The distribution of the heights of five-year-old children
has a mean of 42.5 inches. A pediatrician believes the
five-year-old children in a city are taller on average.
The pediatrician selects a random sample of 40 five-
year-old children and measures their heights. The
mean height of the sample is 44.1 inches with a
standard deviation of 3.5 inches. Do the data provide
convincing evidence at the a =0.01 level that the
mean height of five-year-old children in this city is
greater than 42.5 inches?
O r=2.89
O z = 2.89

73.0769230769% of the games were won

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.