In a large survey, 55% of the people questioned are in full-time employment. In a random sample

Question:

In a large survey, 55% of the people questioned are in full-time employment. In a random sample of 80 of these people, find:

a. The expected number in full-time employment

b. The standard deviation of the number in full-time employment

c. The approximate probability that fewer than half of the sample are in full-time employment.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

ISBN: 9781108407304

1st Edition

Authors: Dean Chalmers, Julian Gilbey

See More Books

Question Posted: Sep 14, 2021 02:11 AM

See More Questions

A recent study reported that fewer than half of young adults turn off the water while brushing their teeth. Is the same true for teenagers? To find out, a group of statistics students asked an SRS of...
Probability that fewer than 20 voted use a normal approximation to find the probability of the indicated number of voters. In each case, assume that 100 eligible voters aged 1824 are randomly...
A survey was taken of a random sample of people noting their gender and asking whether they agreed with the "Occupy Wall Street" (OWS) movement (Source: StatCrunch: Responses to Occupy Wall Street...
apple company: 1.what are key characteristics of the industry? 2. where is the company in its life cycle?
For the balanced chemical equation CuO(s) + H2S(g) ( CuS + H2O() how many molecules of CuS are formed if 9,044 atoms of H react?
Hassellhouf Companys trial balance at December 31, 2014, is presented below. All 2014 transactions have been recorded except for the items described shown below. Unrecorded transactions: 1. On May 1,...
Isabella Lopez plans to open a company that will design and manufacture accessories for smartphones. In preparing to do this, she read that having a clearly articulated business model will help all...
Ahl Enterprise lists the following data for 2011 and 2010: Required Calculate the net profit margin, return on assets, total asset turnover, and return on common equity for both years. Comment on...
12.Indicate, by clicking on the relevant boxes, whether the following statements are true or false?
A manufacturing company provides jobs for many people in a small town where employment is not easy to find. The company has stayed in the town even though it could find cheaper workers elsewhere...
a. A petrol station finds that its daily sales, in litres, are normally distributed with mean 4520 and standard deviation 560. i. Find on how many days of the year (365 days) the daily sales can be...
The masses, w grams, of a large sample of apples are normally distributed with mean 200 and variance 169. Given that the masses of 3413 apples are in the range 187 < w < 213, calculate an estimate of...
You are given the series of cash flows shown in the following table. a. Calculate the compound annual growth rate associated with each cash flow stream. b. If year-1 values represent initial deposits...
A company is considering accepting a one-year contract, which will require four skilled employees. The company could retrain four of its existing employees who currently earn 30,000 each per year....
Using Quinn s seven factors, please prepare a document to predict, uncover, and prepare for any and all eventualities related to these seven factors. This includes getting clarification on questions...
Find the final amount in the following retirement account, in which the rate of return on the account and the regular contribution change over time. $560 per month invested at 5%, compounded monthly,...
Read the material in Appendix C (included below). Create two proposals as a management team that can be presented to the union party. Appendix C Contract Negotiation Simulation Clean Right...
A corporate bond matures in one year. The bond offers a $30 coupon and a principal payment of $1,000 at maturity. If an investor buys the bond for $970, what is the promised yield on the bond?
Which of the following conjugated dienes would not react with a dienophile in a Diels-Alder reaction? a. b. c. d. e. f. CH CH7 CH2 CH2
How has the too-big-to-fail policy been limited in the FDICIA legislation? How might limiting the too-big-to-fail policy help reduce the risk of a future banking crisis?
Thirty-five sophomores, 22 juniors, and 35 seniors are randomly selected to participate in a study from 574 sophomores, 462 juniors, and 532 seniors at a certain high school? Determine the type of...
Suppose the survey is given to 100 subjects. What is the probability of obtaining at least 2 eligible responders who agree to participate? Epidemiology A study was performed to assess the feasibility...
Suppose 1000 potential participants are contacted to participate in the survey. What is the probability that at least 10 of the 1000 participants will be eligible and agree to participate?...
Upon doing a SWOT analysis, the owner realizes her prices average 10% higher than the prices of the same products at the Petco which is at a large strip center about three miles away. What would her...
For each of the three Google Analytics report types, Audience, Behavior and Acquisition: 1. Determine a business goal that you think would prompt a marketer to run that report. (For example, if a...
Develop a A/B test for promoting the new plant-based sandwich that Chick-fil-A introduced ( you can only describe the changes you will make to recent marketing ads for Chick-filk-A). Discuss whether...

In a large survey, 55% of the people questioned are in full-time employment. In a random sample

Question:

Step by Step Answer:

a The expected number in fulltime employment is 44 55 of 80 b The sta...View the full answer

Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

Students also viewed these Mathematics questions