5 An electronics company produces batteries with a lifespan that is normally distributed
with a mean of 182 days and a standard
deviation of 10 days.
a Find the probability that a randomly
selected battery lasts longer than 190 days.
b In a sample of seven batteries chosen
for a quality control inspection, find the
probability that no more than three of
them last longer than 190 days.
404, c If a battery is guaranteed to last up to
}
165 days, find the probability that the
battery will cease to function before the
guarantee runs out.
d Hence predict the number of batteries in
a batch of 10000 that would not last the
duration of the guarantee.
work each

all it means is function 3

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.

answer: the right triangle the furthest one on the right

step-by-step explanation: