Question Details

[answered] A friend tells you that she has conducted a survey to find


A friend tells you that she has conducted a survey to find the proportion of people in her university that utilize the campus internet cafe at least once a day. She has collected a sample and calculated a sample proportion of?p = 0.66. She uses this value to calculate a confidence interval for the population proportion. Your friend says that she is not going to tell you the sample size or the level of confidence used in her construction, but she does tell you that the upper bound for the interval is 0.81.

From the following list, select the values that, based on the information given, could?possibly?be the lower bound of the confidence interval your friend calculated:

0.66
0.51
0.56
0.61
0.46



A survey was run by a high school student in order to determine what proportion of mortgage-holders in his town expect to own their house within 10 years. He surveyed 163 mortgage holders and found that the proportion of these that did expect to own their house within 10 years is 0.70.

The student decides to construct a 95% confidence interval for the population proportion. You may find this?standard normal table?useful for the following questions.

a)Calculate the margin of error that the high school student will have. Give your answer as a decimal to 3 decimal places.

Margin of error =?

A different high school student sees this survey and decides to try and repeat it. This second high school student also surveys 163 mortgage holders, but this student finds that the proportion of these that do expect to own their house within 10 years is 0.85. This student also constructs a 95% confidence interval for the population proportion.

b)Calculate the margin of error that the second student will have. Give your answer as a decimal to 3 decimal places.

Margin of error =?



A survey of 116 small business owners found that a proportion of 0.716 of the owners had decided to downsize in the year following the Global Financial Crisis (GFC).

a)Calculate the number of surveyed small business owners that downsized. Give your answer to the nearest whole number.

Number of owners that downsized =?

A 95% confidence interval is to be constructed for the proportion of all small business owners that decide to downsize after the GFC. You may find this?standard normal table?useful for the following questions.

b)Calculate the lower bound for the confidence interval. Give your answer as a decimal to 3 decimal places.

Lower bound for confidence interval =?

c)Calculate the upper bound for the confidence interval. Give your answer as a decimal to 3 decimal places.

Upper bound for confidence interval =?



1) Margin error = upper bound ? sample proportion

 

= 0.81 ? 0.66

 

= 0.15

 

Lower bound = sample proportion ? margin error

 

= 0.66 ? 0.15

 

= 0.51

 

2) A) Sample proportion, p = 0.7, q = 0.3, n =...

 


Solution details:
STATUS
Answered
QUALITY
Approved
ANSWER RATING

This question was answered on: Sep 18, 2020

PRICE: $15

Solution~0001003231.zip (25.37 KB)

Buy this answer for only: $15

This attachment is locked

We have a ready expert answer for this paper which you can use for in-depth understanding, research editing or paraphrasing. You can buy it or order for a fresh, original and plagiarism-free copy from our tutoring website www.aceyourhomework.com (Deadline assured. Flexible pricing. TurnItIn Report provided)

Pay using PayPal (No PayPal account Required) or your credit card . All your purchases are securely protected by .
SiteLock

About this Question

STATUS

Answered

QUALITY

Approved

DATE ANSWERED

Sep 18, 2020

EXPERT

Tutor

ANSWER RATING

GET INSTANT HELP/h4>

We have top-notch tutors who can do your essay/homework for you at a reasonable cost and then you can simply use that essay as a template to build your own arguments.

You can also use these solutions:

  • As a reference for in-depth understanding of the subject.
  • As a source of ideas / reasoning for your own research (if properly referenced)
  • For editing and paraphrasing (check your institution's definition of plagiarism and recommended paraphrase).
This we believe is a better way of understanding a problem and makes use of the efficiency of time of the student.

NEW ASSIGNMENT HELP?

Order New Solution. Quick Turnaround

Click on the button below in order to Order for a New, Original and High-Quality Essay Solutions. New orders are original solutions and precise to your writing instruction requirements. Place a New Order using the button below.

WE GUARANTEE, THAT YOUR PAPER WILL BE WRITTEN FROM SCRATCH AND WITHIN YOUR SET DEADLINE.

Order Now