Pratyush Raitan

Purdue University
NA

Biography

I have done my Bachelors in Computer Sciences and Engineering from JIIT, Noida. I did my MBA from NMIMS, Mumbai in Decision Sciences and Analytics. Currently, I am pursuing my Masters from Purdue University, USA in Business Analytics and Information Management. I also have a total of 3 years of professional work experience that includes working as an Analyst at Polestar Solutions and Services and as a Technical Analyst at Novartis Healthcare Pvt. Ltd.

Education

MS Business Analytics and Information Management
Purdue University

Educator Statistics

Numerade tutor for 5 years
296 Students Helped

Topics Covered

Maximizing Accuracy with Effective Sampling and Data Analysis
Unlocking Insights with Descriptive Statistics: A Comprehensive Guide
Exploring Probability Topics: From Basics to Advanced Strategies
Understanding Discrete Random Variables: A Comprehensive Guide
Understanding Continuous Random Variables: Key Concepts

Pratyush's Textbook Answer Videos

07:28
STATS Modeling The World

Initially, 203 students signed up for the Stats course in Exercise 35. They used the software suggested by the salesman, and only 11 dropped out of the course.
a) Should the professor spend the money for this software? Support your recommendation with an appropriate test.
b) Explain what your P-value means in this context.

Chapter 5: From the Data at Hand to the World at Large
Section 4: More About Tests and Intervals
Pratyush Raitan
01:32
Introductory Statistics

Explain the difference between
a. frequency and relative frequency.
b. percentage and relative frequency.

Chapter 2: Organizing Data
Section 2: Organizing Qualitative Data
Pratyush Raitan
02:10
Introductory Statistics

Answer true or false to each of the statements in parts (a) and (b), and explain your reasoning.
a. Two data sets that have identical frequency distributions have identical relative-frequency distributions.
b. Two data sets that have identical relative-frequency distributions have identical frequency distributions.
c. Use your answers to parts (a) and (b) to explain why relative frequency distributions are better than frequency distributions for comparing two data sets.

Chapter 2: Organizing Data
Section 2: Organizing Qualitative Data
Pratyush Raitan
03:17
Introductory Statistics

Road Rage. The report Controlling Road Rage: A Literature Review and Pilot Study was prepared for the AAA Foundation for Traffic Safety by D. Rathbone and J. Huckabee. The authors discuss the results of a literature review and pilot study on how to prevent aggressive driving and road rage. As described in the study, road rage is criminal behavior by motorists characterized by uncontrolled anger that results in violence or threatened violence on the road. One of the goals of the study was to determine when road rage occurs most often. The days on which 69 road rage incidents occurred are presented in the following table.
$$\begin{array}{llllllllll}\hline \mathrm{F} & \mathrm{F} & \mathrm{Tu} & \mathrm{Tu} & \mathrm{F} & \mathrm{Su} &\mathrm{F} & \mathrm{F} & \mathrm{Tu} & \mathrm{F} \\\mathrm{Tu} & \mathrm{Sa} & \mathrm{Sa} & \mathrm{F} & \mathrm{Sa} & \mathrm{Tu} & \mathrm{W} & \mathrm{W} & \mathrm{Th} & \mathrm{Th} \\\mathrm{Th} & \mathrm{Sa} & \mathrm{M} & \mathrm{Tu} & \mathrm{Th} & \mathrm{Su} & \mathrm{W} & \mathrm{Th} & \mathrm{W} & \mathrm{Tu} \\\mathrm{Tu} & \mathrm{F} & \mathrm{Th} & \mathrm{Th} & \mathrm{F} & \mathrm{W} & \mathrm{F}& \mathrm{Th} & \mathrm{F} & \mathrm{Sa} \\\mathrm{F} & \mathrm{W} & \mathrm{W} & \mathrm{F} & \mathrm{Tu} & \mathrm{W} & \mathrm{W}& \mathrm{Th} & \mathrm{M} & \mathrm{M} \\\mathrm{F} & \mathrm{Su} & \mathrm{Tu} & \mathrm{F} & \mathrm{W} & \mathrm{Su} & \mathrm{W}& \mathrm{Th} & \mathrm{M} & \mathrm{Tu} \\\mathrm{F} & \mathrm{W} & \mathrm{Th} & \mathrm{M} & \mathrm{Su} & \mathrm{Sa} & \mathrm{Sa} & \mathrm{F} & \mathrm{F} & \\\hline\end{array}$$

Chapter 2: Organizing Data
Section 2: Organizing Qualitative Data
Pratyush Raitan
03:50
Introductory Statistics

The Department of Justice and the Federal Bureau of Investigation publish a compilation on crime statistics for the United States in Crime in the United States. The following table provides a frequency distribution for robbery type during a one-year period.
$$\begin{array}{|l|c|}\hline \text { Robbery type } & \text { Frequency } \\\hline \text { Street/highway } & 179,296 \\\text { Commercial house } & 60,493 \\\text { Gas or service station } & 11,362 \\\text { Convenience store } & 25,774 \\\text { Residence } & 56,641 \\\text { Bank } & 9,504 \\\text { Miscellaneous } & 70,333 \\\hline\end{array}$$

Chapter 2: Organizing Data
Section 2: Organizing Qualitative Data
Pratyush Raitan
04:10
Introductory Statistics

Observing that the proportion of blue M\&Ms in his bowl of candy appeared to be less than that of the other colors, R. Fricker, Jr., decided to compare the color distribution in randomly chosen bags of M\&Ms to the theoretical distribution reported by M\&M/MARS consumer affairs. Fricker published his findings in the article "The Mysterious Case of the Blue M\&Ms" (Chance, Vol. $9(4),$ pp. $19-22$ ). For his study, Fricker bought three bags of M\&Ms from local stores and counted the number of each color. The average number of each color in the three bags was distributed as shown in the following table.
$$\begin{array}{|l|c|}\hline \text { Color } & \text { Frequency } \\\hline \text { Brown } & 152 \\\text { Yellow } & 114 \\\text { Red } & 106 \\\text { Orange } & 51 \\\text { Green } & 43 \\\text { Blue } & 43 \\\hline\end{array}$$

Chapter 2: Organizing Data
Section 2: Organizing Qualitative Data
Pratyush Raitan
1 2 3 4 5 ... 37

Pratyush's Quick Ask Videos

01:20
Intro Stats / AP Statistics

Drug usage in the workplace costs employers incredible amounts
of money each year. Drug testing potential employees has become so
prevalent that drug users are finding it extremely hard to find
jobs. Drug tests, however, are not completely reliable. The most
common test used to detect drugs is approximately 99% accurate. To
decrease the likelihood of making an error, all potential employees
are screened through two tests, which are independent, and each has
92% accuracy. If a potential employee were drug free, what is the
probability that the person would pass the first test and fail the
second test?

Pratyush Raitan
02:15
Intro Stats / AP Statistics

In a large population, 53% of the people have been vaccinated.
If 3 people are randomly selected, what is the probability that at
least one of them has been vaccinated?
Give your answer as a decimal to at 4 places.

Pratyush Raitan
04:27
Intro Stats / AP Statistics

A hotel has a fleet of nine taxis, which it is using to pick up
guests. Four taxis must be sent to the airport, three taxis must be
sent to the harbor, and two taxis must be sent to the train
station. Assume that taxis are allocated to destinations at
random.
a) If one of the taxis is in need of repair, what is the
probability that it was dispatched to the airport ?
b) If three of the taxis are in need of repair, what is the
probability that every destination (airport, harbor and train
station) gets one taxi in need of repair ?

Pratyush Raitan
03:56
Intro Stats / AP Statistics

Two balls are drawn without replacement from a box containing 5
balls numbered 1,2,3,4,5. Let X denote the larger of the two
numbers obtained. Find the probability that:
(a.) X=5
(b.) X is less than 4
Options:
A.) 0.4
B.) 0.3
C.) 0.25
D.) 0.7

Pratyush Raitan
01:12
Intro Stats / AP Statistics

A survey of students at a college found the following majors:
Accounting - 22
Finance - 15
Economics - 14
Management - 11
What is the probability that a random student selected is a finance major?
State your answer using two decimal digits.

Pratyush Raitan
02:59
Intro Stats / AP Statistics

Refer to the following table: (Round the final answers to 2 decimal places.)

Second Event First Event
A1 A2 A3 Total
B1 2 2 1 5
B2 3 1 3 7
Total 5 3 4 12

a. Determine P(A1).
P(A1) =

b. Determine P(B1|A2).
P(B1|A2)
=

c. Determine P(B2 and A3).
P(B2 and A3)
=

Pratyush Raitan
1 2 3 4 5 ... 13