I need help with the last qiestion, please and an explanation of how to solve it on TI84 calculator if possible. Thank you. The amount of pollutants that are found in waterways near large cities is normally distributed with mean9.2 ppm and standard deviation 1.6 ppm. 7 randomly selected large cities are studied. Round all answers to4 decimal places where possible.a. What is the distribution of X? X - N( 9.2b. What is the distribution of ? x - N 9.20.6047c. What is the probability that one randomly selected city's waterway will have less than 9.2 ppmpollutants? 0.5000d. For the 7 cities, find the probability that the average amount of pollutants is less than 9.2 ppm.0.50001.6e. For part d), is the assumption that the distribution is normal necessary? Yes No orf. Find the IQR for the average of 7 cities.Q1 =ppmQ3 =ppmIQR:ppm

(f) The value of Q1 for the average of 7 cities is obtained below as follows: Use TI-84…

Answered: f. Find the IQR for the average of 7…

Math

Probability

f. Find the IQR for the average of 7 cities. Q1 = ppm Q3 ppm IQR: ppm

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Question

I need help with the last qiestion, please and an explanation of how to solve it on TI84 calculator if possible. Thank you.

The amount of pollutants that are found in waterways near large cities is normally distributed with mean
9.2 ppm and standard deviation 1.6 ppm. 7 randomly selected large cities are studied. Round all answers to
4 decimal places where possible.
a. What is the distribution of X? X - N( 9.2
b. What is the distribution of ? x - N 9.2
0.6047
c. What is the probability that one randomly selected city's waterway will have less than 9.2 ppm
pollutants? 0.5000
d. For the 7 cities, find the probability that the average amount of pollutants is less than 9.2 ppm.
0.5000
1.6
e. For part d), is the assumption that the distribution is normal necessary? Yes No or
f. Find the IQR for the average of 7 cities.
Q1 =
ppm
Q3 =
ppm
IQR:
ppm

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Step 1: Obtain the value of Q1 for the average of 7 cities.

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Step 2: Obtain the value of Q3 for the average of 7 cities.

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Step 3: Obtain the value of IQR

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