Natalie Ringer
Exam 2
Ch.1 to Ch.6
Use the following scenario for the next 3 questions. Suppose that monthly sales volume for a
product is normally distributed, with a mean of 500 units and a standard deviation of 50 units. If
x denotes the number of unit
HW assignment #2
Natalie Ringer
1)
Consider the GPAs for the following 15 students
3.10, 3.20, 3.49, 2.68, 3.73, 3.39, 3.80, 3.11, 3.10, 3.10, 4.0, 3.89, 2.55, 4.0, and 3.75
a) Compute the max, min, Q1, median, Q3, IQR, and range
Max = 4.0
Min = 2.55
Q1 =
Natalie Ringer
Homework #4
Use the following scenario to answer the next 6 questions. Let x be a binomial random variable
with
n = 10 and p =.4. Find the following values:
1)
P(x = 4)
P(x=4)= 10c4(o.4)4(0.6)6=
0.2508
2)
P(x 4)
P(x>4)=P(x=5,6,7,8,9,10)=1-P
Natalie Ringer
Homework #6
Use the following scenario to answer the next 3 questions. Plastic bags used for packaging produce are
manufactured so that the breaking strength of the bag is normally distributed with a mean of 5 pounds per
square inch and a s
HW assignment #1
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Classify each of the following types of data for questions 1-3:
1)
Ethnicity - Qualitative - categorical variable
2)
Length - Quantitative
3)
Temperature (Celsius) - Quantitative
4)
Make a Stem and Leaf plot from the follow
Natalie C. Ringer
Final Exam Ch. 7 11, 13 14
The next 7 questions refer to the following scenario. A long jump competition took place
recently at a local high school. The coach is interested in performing as well as possible next
time, so he is looking at
Natalie Ringer
Homework #10
A baseball analyst would like to develop a model to predict the number of wins during the 2000 baseball
season. The analyst collected several variables: Wins, ERA, Runs Scored, Hits Allowed, Walks Allowed, Errors,
and Saves fro
Natalie Ringer
Wk7 Homework Assignment
1)
The average years of employee experience at any company is normally distributed, with a
standard deviation of 12 years. If a sample of 50 employees indicates a mean age is 38 year.
a)
Calculate a 90% confidence in
Natalie Ringer
HW#8
1)
Twenty-five factory workers were asked how many vacation days they take a year. The
average of the sample was 22.85 days, and the standard deviation was 5.80 days. In the past HR uses an
average of 25 vacation days per worker in ord
Natalie RInger
SUMMARY OUTPUT Use this output to answer the next 10 questions
_
Regression Statistics
_
Multiple R
0.9445
R Square
0.8921
Adjusted R Square
0.8742
Standard Error
1.9005
Observations
8
_
ANOVA
Regression
Residual
Total
df
1
6
7
Coefficient
EBook Transition Project
Statistics for Business
2/27/13
Natalie C. Ringer
These charts show data that was collected because the institute would like to eventually transition
from using traditional textbooks to electronic textbooks. Prior to making this t
For problems 1 3, refer to page 14 in your textbook.
You will need to identify whether the data is qualitative or quantitative.
If your data is qualitative, identify if it is ordinal or nominative.
If your data is quantitative, identify if it is ratio or
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y
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Natalie Ringer
Homework #5
Use the following scenario to answer the next 3 questions. It is known that 30% of all customers
of a major credit card pay their bills in full before any interest charges are incurred. Suppose a
simple random sample of 150 cred
HW Assignment # 3
Natalie Ringer
Assuming a standard deck of 52 playing cards (for questions 1 to 4), calculate the
probability of each event described below:
1)
Draw one card that is red. P(R) = 26/52 = 1/2
2)
Draw one card that is a queen and a heart. P
Week 05 Exercises
Instructions: Use the space provided to enter your answers. Be sure to use the Microsoft Equation Editor to show answers and calculations.
1) Suppose x is a random variable best described by a uniform probability
distribution with c=10 a