Determine the proportion of those who signed the petition

Assignment Help Basic Statistics
Reference no: EM131010230

1. As part of a curriculum review, the psychology department would like to select a simple random sample of 20 of last year's 140 graduates to obtain information on how graduates perceived the value of the curriculum. Describe two different methods that might be used to select the sample.

2. A petition with 500 signatures is submitted to a university's student council. The council president would like to determine the proportion of those who signed the petition who are actually registered students at the university. There is not enough time to check all 500 names with the registrar, so the council president decides to select a simple random sample of 30 signatures. Describe how this might be done.

Reference no: EM131010230

Questions Cloud

Describe the procedure you used to select the sample : Select a strati?ed random sample that uses full-time and part-time students as the two strata and that includes 10 students from each stratum. Describe the procedure you used to select the sample, and identify the students included in your sample..
Gallons and standard deviation : A gasoline tank for a certain car is designed to hold 15 gallons of gas. Suppose that the variable x = actual capacity of a randomly selected tank has a distribution that is well approximated by a normal curve with mean 15.0 gallons and standard d..
Preceding problem produces corks : Suppose that there are two machines available for cutting corks. The machine described in the preceding problem produces corks with diameters that are approximately normally distributed with mean 3 cm and standard deviation 0.1 cm.
Distribution of the diameter of the corks : A machine that cuts corks for wine bottles operates in such a way that the distribution of the diameter of the corks produced is well approximated by a normal distribution with mean 3 cm and standard deviation 0.1 cm.
Determine the proportion of those who signed the petition : As part of a curriculum review, the psychology department would like to select a simple random sample of 20 of last year's 140 graduates to obtain information on how graduates perceived the value of the curriculum. Describe two different methods t..
Proportion of overweight children : a. Approximately what proportion of overweight children has left atrial diameters less than 25 mm? b. Approximately what proportion of overweight children has left atrial diameters greater than 32 mm?
Define hyperbolic cosine function : Hyperbolic functions are similar to trigonometric functions. Define hyperbolic cosine, denoted cosh(x) as cosh(x) = (ex + e-x) / 2, and define hyperbolic sine, denoted sinh(x), as sinh(x) = (ex + e-x) / 2.
Does living in the south cause high blood pressure : Does living in the South cause high blood pressure? Data from a group of 6278 whites and blacks questioned in the Third National Health and Nutritional Examination Survey between 1988 and 1994 indicates that a greater percentage of Southerners have..
What in particular stood out or stick with you : Read the attach chapters and write 250 word "what in particular stood out/stick with you?" and why

Reviews

Write a Review

Basic Statistics Questions & Answers

  Find z give your answer correct to two decimal places find

the average size of a home in 2003 was 2313 square feet according to the national association of home builders and

  If the spinner lands on on any space not chosen the player

a spinner is divided into 4 equal spaces. a player bets 2.00 on a given space. if the spinner lands on that space he is

  Finding mean-standard deviation from percentiles

The Globe Fishery packs shrimp that weigh more than 1.91 ounces each in packages marked" large" and shrimp that weigh less than 0.47 ounces each into packages marked "small"; the remainder are packed in "medium" size packages.

  Poisson probability distribution

Recent crime reports indicate that 5.2 motor vehicle thefts occur each minute in the United States. Assume that the distribution of thefts per minute can be approximated by the Poisson probability distribution.

  Information of expected frequency

Determine the expected frequencies for each of the cells in the following contingency tables. For each problem, state how many of the expected values actually had to be computed and how many could be found by subtraction.

  Assuming this to be a simple random sample of us adults

in a survey of 500 u.s. adults 45 of them said that lounging at the beach was their dream vacation assuming this to be

  Proportionate stratified sample

You wish to do a community needs assessment survey of a community to find out how much office space is needed by professionals in the community.

  Confidence intervals by using population samples

What is the major difference between finding significance and confidence intervals using population samples or using population proportions?

  Find number of students are expected to make scores

Suppose that this test is given to 1000 students. What is the number of students that are expected to make scores between 170 and 230?

  Confidence interval for proportion of delinquent customer

What is the 95% confidence interval for the proportion of all delinquent customer accounts at this manufacturing company?

  Maximum error of estimate as the sample size gets larger

What happens to the Maximum Error of Estimate as the sample size gets larger?

  What is the difference between significance level and a

what is the difference between significance level and a p-value? explain in

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd