Question

In
a 2007 poll 770 of 1027 respondents wanted Congress to pass an
economic stimulus bill. Confirm the distribution for p-hat is
approximately normal and find a 95% confidence interval for the
proportion of people suppoeting an economic stimulus bill.

Answer #1

A research institute poll asked respondents if they felt
vulnerable to identity theft. In the poll, n=946 and 1x=591 who
said "yes." Use a %95% confidence level.
a)
Find the best point estimate of the population proportion p.
b) Identify the value of the margin of error E.
c)Construct the confidence interval.
d)Write a statement that correctly interprets the confidence
interval. Choose the correct answer below.

a research institute poll asked respondents if they acted to
annoy a bad driver. in the poll, ...
Question: A research institute poll asked respondents if they acted
to annoy a bad driver. n = 2655 comma and x = 903 who
said that they honked. Use a 95 % confidence level.
A) Find the best point estimate of the population P. (Round to
three decimal places as needed)
B) Identify the value of margin of error E. ________ (Round to...

A professional pollster takes an exit poll for an election of a
governor in Pennsylvania. Of the 1350 adults who voted in that
election, 670 say they voted for the Democratic candidate. We will
treat this exit poll as a random sample of all the people who voted
in that election.
1. What is the population?
a) The 1350 people who were surveyed
b) All adults in PA who voted in that election
c) All adults in PA
d) All...

Suppose we have a binomial experiment in which success is
defined to be a particular quality or attribute that interests
us.
(a)
Suppose n = 33 and
p = 0.29.
(For each answer, enter a number. Use 2 decimal places.)
n·p =
n·q =
Can we approximate p̂ by a normal distribution? Why? (Fill
in the blank. There are four answer blanks. A blank is represented
by _____.)
_____, p̂ _____ be approximated by a normal random
variable because _____...

A student has the following assignment grades: 85, 92, 72, 69,
74, 96, 83, 76, 72, 97. Find the mean, mode, and the five-number
summary. Round to one decimal
Find the mean and the standard deviation of the following quiz
scores:
21, 20, 23, 15, 16. Round to one decimal.
15,000 students take a national test. The results are normally
distributed with a mean of 400 and a standard deviation of 120.
Approximately how many students scored between 400 and...

Total plasma volume is important in determining the required
plasma component in blood replacement therapy for a person
undergoing surgery. Plasma volume is influenced by the overall
health and physical activity of an individual. Suppose that a
random sample of 43 male firefighters are tested and that they have
a plasma volume sample mean of x = 37.5 ml/kg (milliliters plasma
per kilogram body weight). Assume that σ = 7.70 ml/kg for the
distribution of blood plasma.
(b) What conditions...

From public records, individuals were identified as having been
charged with drunken driving not less than 6 months or more than 12
months from the starting date of the study. Two random samples from
this group were studied. In the first sample of 30 individuals, the
respondents were asked in a face-to-face interview if they had been
charged with drunken driving in the last 12 months. Of these 30
people interviewed face to face, 16 answered the question
accurately. The...

A.) For this problem, carry at least four digits after the
decimal in your calculations. Answers may vary slightly due to
rounding.
A random sample of medical files is used to estimate the proportion
p of all people who have blood type B.
(a) If you have no preliminary estimate for p, how many
medical files should you include in a random sample in order to be
85% sure that the point estimate p? will be within a
distance of...

A medical researcher would like to determine how effective a new
form of knee surgery is for
treating knee pains. (In particular, is there a relationship
between surgery status and pain
reduction status?) He gathers 500 people with knee pain who are
scheduled to have this
surgery, and 500 people with knee pain who are not scheduled to
have this surgery. He follows
up with both groups after 2 months and determines the number of
participants of each group
who...

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 12 minutes ago

asked 22 minutes ago

asked 34 minutes ago

asked 34 minutes ago

asked 45 minutes ago

asked 52 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