Madeline Alzamora

Arizona State University
Other

Biography

Hello! I love science, most specifically chemistry, and other similar disciplines. I look forward to helping you understand difficult topics!

Education

BS Chemistry
Arizona State University

Educator Statistics

Numerade tutor for 2 years
415 Students Helped

Topics Covered

Breaking Limits: Unlock Your Potential with Our Expert Solutions
Exploring the World of Derivatives: A Comprehensive Guide
Unlocking Insights with Descriptive Statistics: A Comprehensive Guide

Madeline's Textbook Answer Videos

02:51
Business Statistics in Practice

Recall that 65 purchasers have participated in a survey and have rated the XYZ-Box video game system. The composite ratings that have been obtained are as follows:
$\begin{array}{lllllllll}39 & 38 & 40 & 40 & 40 & 46 & 43 & 38 & 44 & 44 & 44 \\ 45 & 42 & 42 & 47 & 46 & 45 & 41 & 43 & 46 & 44 & 42 \\ 38 & 46 & 45 & 44 & 41 & 45 & 40 & 36 & 48 & 44 & 47 \\ 42 & 44 & 44 & 43 & 43 & 46 & 43 & 44 & 44 & 46 & 43 \\ 42 & 40 & 42 & 45 & 39 & 43 & 44 & 44 & 41 & 39 & 45 \\ 41 & 39 & 46 & 45 & 43 & 47 & 41 & 45 & 45 & 41 & \end{array}$
a Construct a stem-and-leaf display for the 65 composite ratings. Hint: Each whole number rating can be written with an "implied tenth place" of zero. For instance, 39 can be written as 39.0 . Use the implied zeros as the leaf values and the whole numbers $36,37,38,39,$ etc. as the stem values.
b Describe the distribution of composite ratings.
C If we consider a purchaser to be "very satisfied" if his or her composite score is at least $42,$ can we say that almost all purchasers of the XYZ-Box video game system are "very satisfied"?

Chapter 2: Descriptive Statistics: Tabular and Graphical Methods
Madeline Alzamora
03:41
Business Analytics: Methods, Models, and Decisions

A gasoline mini-mart orders 25 copies of a monthly magazine. Depending on the cover story, demand for the magazine varies. The gasoline mini-mart purchases the magazines for $$\$ 1.50$$ and sells them for $$\$ 4.00$$. Any magazines left over at the end of the month are donated to hospitals and other health-care facilities. Modify the newsvendor example spreadsheet to model this situation. Investigate the financial implications of this policy if the demand is expected to vary between 10 and 30 copies each month. How many must be sold to at least break even?

Chapter 11: Spreadsheet Modeling and Analysis
Madeline Alzamora
1

Madeline's Quick Ask Videos

01:03
Prealgebra

Identify each sample as biased or unbiased and describe its type. Explain your reasoning.
To determine the quality of cell phones coming off an assembly line, the manager chooses one cell phone every 20 minutes and checks it.

Madeline Alzamora
02:54
Prealgebra

The bar graph shows the differences among age groups on the Implicit Association Test that measures levels of racial prejudice. Higher scores indicate stronger bias. (GRAPH CANNOT COPY)
a. The data can be described by the following polynomial model of degree 3 : $$\begin{aligned}S=0.2 x^{3}-1.5 x^{2}+3.4 x+25 & \\+&\left(0.1 x^{3}-1.3 x^{2}+3.3 x+5\right)\end{aligned}$$
In this polynomial model, $S$ represents the score on the Implicit Association Test for age group $x .$ Simplify the model.
b. Use the simplified form of the model from part (a) to find the score on the Implicit Association Test for the group in the $45-54$ age range. How well does the model describe the score displayed by the bar graph?

Madeline Alzamora
04:04
Organic Chemistry

What is Witt's theory of colour and constitution (structure) of dye and what are its limitations?

Madeline Alzamora
02:29
Organic Chemistry

What are the advantages and disadvantages of Protein efficiency ratio and Amino acid score

Madeline Alzamora
05:10
Chemistry 101

Calculate the minimum work necessary to compress 2 moles of an ideal gas from 10 to 5 Liter at 27°C. How much heat is absorbed in the compression process?

Madeline Alzamora
01:48
Organic Chemistry

1. Which of the following statements is false about DNA?
a) Located in chromosomes
b) Carries genetic information from parent to offspring
c) Abundantly found in cytoplasm
d) There is a precise correlation between the amount of DNA and the number of sets of chromosomes per cell

2. Which of the following functions of DNA is necessary for the purpose of evolution?
a) Replication
b) Transcription
c) Translation
d) Mutation

3. According to the phenotypic characters of pneumococcus considered in Griffith's experiment of transformation, which of the following statements are correct?
i) Presence of slime layer
ii) Presence of capsule
iii) Absence of capsule
iv) Type of adhesion
v) Molecular makeup of capsule
a) i, ii, iii
b) ii, iii, iv
c) ii, iii, v
d) i, iv, v

Madeline Alzamora
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