Question

In your own town, the number of individuals voting in the next election is 800. Of those voting, 600 are Republicans. Assume the probability of getting a Republican on each sampling stays the same. If you randomly sample 60 individuals, one at a time, from the voting population, calculate the following:

a) The normal distribution that the binomial distribution approximates has a mean of:

b) The normal distribution that the binomial distribution approximates has a standard deviation of:

c) What is the probability there will be 42 or more Republicans in the sample?

Answer #1

Suppose your friend Joanna is running for class president. The
proportion of individuals in a population of students who will vote
for Joanna on election day is 60%. You plan to conduct a poll of
size n and report X, the number of individuals in your poll who
plan to vote for Joanna. You also plan to compute ?̂=??, the
proportion of individuals in your poll who plan to vote for
Joanna.
a) Explain why X is a binomial random...

1. You own a bond that will pay 10% per year for the next 10
years, on a principal of $1000. The prevailing discount rate is 10%
throughout. What is the bond value?
A. $2000. B. $500 C. $1100 D. $ 1000
2. A bond with a coupon rate of 6% and pays interest
semi-annually. The face value of the bond is $1000. It has six
years to mature. What is the bond prices when the discount rate is
5%?...

Suppose that you are interested in estimating the average number
of miles per gallon of gasoline your car can get. You calculate the
miles per gallon for each of the next ten times you fill the tank.
Suppose that in truth, the values for your car are bell-shaped,
with a mean of 25 miles per gallon and a standard deviation of 1.
Find the possible sample means you are likely to get based on your
sample of ten observations. Consider...

QUESTION 1 [13 MARKS]
Write down only the letter corresponding to your choice next to
the question number.
1.1. A random variable that can assume only a finite number of
values is referred to as a
a) Infinite sequence
b) Finite sequence
c) Discrete random variable
d) Discrete probability function
e) All of the above
1.2 Which one of the following statements is incorrect?
a) A data set provides information about people, objects or
other entities.
b) If the possible...

Answer the question.
CHAPTER 8: ESTIMATION AND CONFIDENCE INTERVALS
1. As degrees of freedom increase, the t-distribution approaches
the:
A. binomial distribution
B. exponential distribution
C. standard normal distribution
D. None of the above
2. Given a t-distribution with 14 degrees of freedom, the area
left of - 1.761 is
A. 0.025
B. 0.05
C. 0.10
D. 0.90
E. None of the above
3. 100 samples of size fifty were taken from a population with
population mean 72. The sample...

R Code
Directions: All work has to be your own, you may not work in
groups. Show all work. Submit your solutions in a pdf document on
Moodle. Include your R code (which must be
commented and properly indented) in the pdf file. Name this pdf
file ‘your last name’-HW5.pdf. Also submit one text file with your
R code, which must be commented and properly indented. You may only
use ‘runif’ to generate random numbers; other random number
generating functions...

1.The sample mean is an unbiased estimator for
the population mean. This means:
The sample mean always equals the population mean.
The average sample mean, over all possible samples, equals the
population mean.
The sample mean will only vary a little from the population
mean.
The sample mean has a normal distribution.
2.Which of the following statements is
CORRECTabout the sampling distribution of the
sample mean:
The standard error of the sample mean will decrease as the
sample size increases....

In February 2012, the Pepsi Next product was launched into
the US market. This case study provides students with an
interesting insight into PepsiCo’s new product process and some of
the challenging decisions that they faced along the way.
Pepsi Next Case Study
Introduction
Pepsi Next was launched by PepsiCo into the US market in
February 2012, and has since been rolled out to various
international markets (for instance, it was launched in Australia
in September 2012).
The new product...

MATHEMATICS
1. The measure of location which is the most likely to
be
influenced by extreme values in the data set is the a. range
b.
median c. mode d. mean
2. If two events are independent, then a. they must be
mutually
exclusive b. the sum of their probabilities must be equal to one
c.
their intersection must be zero d. None of these alternatives
is
correct. any value between 0 to 1
3. Two events, A and B,...

Delta airlines case study
Global strategy. Describe the current global
strategy and provide evidence about how the firms resources
incompetencies support the given pressures regarding costs and
local responsiveness. Describe entry modes have they usually used,
and whether they are appropriate for the given strategy. Any key
issues in their global strategy?
casestudy:
Atlanta, June 17, 2014. Sea of Delta employees and their
families swarmed between food trucks, amusement park booths, and
entertainment venues that were scattered throughout what would...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 1 minute ago

asked 22 minutes ago

asked 33 minutes ago

asked 40 minutes ago

asked 58 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago