The Environmental Protection agency requires that the exhaust of each model of motor vehicle be tested for the level of several pollutants. The level of oxides of nitrogen (NOX) in the exhaust of one light truck model was found to vary among individually trucks according to a Normal distribution with mean 1.45 grams per mile driven and standard deviation 0.40 grams per mile. (a) What is the 90th percentile for NOX exhaust, rounded to four decimal places?

(b) Find the interquartile range for the distribution of NOX levels in the exhaust of trucks rounded to four decimal places.

A benefit of major sporting events is that they generate a feeling of civil pleasure where it also help people from dissimilar countries to introduce other people. Another benefit of sports si that the nations which are hosting the event earns a large amount of wealth. , watching sport activities encourages people to participate and keep in fit. Similarly, well known sportsmans be like a idol for people. By watching sport events people not only see what is tolerance, practicing and talent could achieve but people also make well-known sportsmans as their idols. Moreover, sportmans are fulfilled by taking part of a sport event, whereas viewers also gets delighted by watching these events.

When it comes to drawbacks, the

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true