1 in a recent survey of 4513 college undergraduates 20

Assignment Help Basic Statistics
Reference no: EM13615444

1. In a recent survey of 4513 college undergraduates, 20% reported having fallen asleep in class. To test this result, your instructor sampled 25 students from his class and asked them if they ever fell asleep in class. Using the survey data to represent the population for the instructor?s sample, what is the probability that:

a. None of the students sampled will report they fell asleep in class.

b. At least 4 students will report they fell asleep in class.

Reference no: EM13615444

Questions Cloud

Test the hypothesis that the average price is higher than : the average prices for a product in 12 stores in a city are shown below.2.99 2.15 3.25 3.55 3.00 2.99 2.66 3.50 3.20
A charity receives 1700 contributions contributions are : a charity receives 1700 contributions. contributions are assumed to be independent and identically distributed with
Suppose a manufacturing company makes a certain item the : suppose a manufacturing company makes a certain item. the time to produce each item is normally distributed around a
Suppose an x distribution has mean icircfrac14 4 consider : suppose an x distribution has mean icircfrac14 4. consider two corresponding x distributions the first based on
1 in a recent survey of 4513 college undergraduates 20 : 1. in a recent survey of 4513 college undergraduates 20 reported having fallen asleep in class. to test this
If when determining the cross-products for your correlation : if when determining the cross-products for your correlation coefficient positive z scores on one variable go with
Which of the following correlation coefficients represents : which of the following correlation coefficients represents the variables with the weakest degree of
A survey of an urban university population of 25450 showed : a survey of an urban university population of 25450 showed that 750 of 1100 students sampled attended a home football
A researcher notes that the correlation in the group she : a researcher notes that the correlation in the group she studies is so large that if there were not a correlation among

Reviews

Write a Review

Basic Statistics Questions & Answers

  Assume there are 18 homes in the quail creek area and 9 of

assume there are 18 homes in the quail creek area and 9 of them have a security system. four homes are selected at

  Then a ball is chosen from that urn urn 1 contains 1 white

one of two urns is chosen at radom. then a ball is chosen from that urn. urn 1 contains 1 white balls and 3 red balls.

  Hypothesis testing on maintence cost

An Electric Co. Operates a fleet of trucks that provide electrical service to the construction industry. Monthly mean maintenance cost has been $75 per truck.

  Statistics-hypothesis testing of production line

The production line that packages boxes of raisins at a snack food manufacturer will be considered operating properly if the average weight of the boxes of raisin is 3.5 ounces with a standard deviation of 0.3 ounces.

  Normally and non-normally distributed population

The majority of the data is basically distributed if there are enough subjects. For instance, if you collected test scores of only a few honor students, the data will most likely not be normally distributed because you would have a sample that did..

  Obtain the empirical influence function for the mean

Obtain the empirical influence function for the mean and sketch its influence curve. What does this influence function tell you about the mean (hint: try x = 5 or x

  Create a scatter diagram and consider the correlation

Create a scatter diagram and consider the correlation for the given data. Create a scatter diagram and sketch the line you think best fits the data.

  Sufficient reason to conclude population standard deviation

The sample variance was s^2=16.0. does the sample show sufficient reason to conclude that the population standard deviation is not equal to 3 at the 0.05 level of significance? use the p-value method.

  Construct confidence intervals for the population mean

You are given the sample mean and the sample standard deviation. use this information to construct the 90% and 95% confidence intervals for the population mean. Which interval is wider?

  Determining the forecast based on the two different methods

Would you be willing to provide an example of both methods (step by step) described in your document for determining the forecast based upon the two different methods. Maybe just for one single city.

  Let a and b be 2 sets and let pa and pb denote the

let a and b be 2 sets and let pa and pb denote the probabilities assigned to the 2 sets. if we know that a is a subset

  Hypothesis tests that make up two factor anova

The structure of a two factor study can be presented as a matrix with levels of one factor determining the rows and the levels of the second factor determining the columns. With this structure in mind, describe the mean differences that are evalua..

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