Margin of error and confidence interval

Assignment Help Basic Statistics
Reference no: EM13104407

Assume that the population means are to be estimated from the sample described below. Use the sample results to approximate the margin of error and 95% confidence interval

Sample size= 1,060

Sample size= $46,233

Sample standard deviation= $21,000

a) The margin of error is $______ (please round tot the nearest dollar as needed)

b) Find rhe 95% confidence interval $____< µ < $____ (please round to the nearest dollar as needed)

Reference no: EM13104407

Questions Cloud

Problem related to deer in a region carry a certain tick : Biologist estimates that 50% of the deer in a region carry a certain type of tick. For a sample of 300 deer selected at random, what is the chance that 155 or fewer deer have this tick?
Confidence interval for sample of 60 students : A sample of 60 students from a large university is taken. The average age in the sample was 22 years with a standard deviation of 6 years.
What is the function of a cell membrane : Why is the human body not an equipotential surface? What is the function of a cell membrane in this respect and what electrical device does it behave like?
Explain treatments for schizophrenia disorder : What you discovered interesting about this disorder (Schizophrenia); 2) possible etiology; 3) treatments for disorder.
Margin of error and confidence interval : Assume that the population means are to be estimated from the sample described below. Use the sample results to approximate the margin of error and 95% confidence interval
Proportion of internet users paying bills online : At the 5% level of significance, test whether the proportion of internet users paying bills online is now more than 50%.
What is the average speed of the electron : An electron moves in the positive x-direction a distance of 2.31 m in 2.85·10-8 s, bounces off a moving proton, and then moves in the opposite direction a distance of 1.53 m in 3.33·10-8 s.
Calculate the pay overlap : Assume Pay Grade A has a midpoint of $42,000 per hour with a 40% pay spread. Pay Grade B had a minimum pay of $60,000 per hour.
Conducting post hoc tests when necessary : Use the data set for math education and conduct an ANOVA to see if there are any statistically significant differences with respect to problem solving total for students who have different categories of the concept of learning by themes (colcateg)..

Reviews

Write a Review

Basic Statistics Questions & Answers

  Independent-dependent and matched pairs

Determine whether the sampling method is independent or dependent for the following example. A researcher wants to know whether the newly issued "state" quarters have a mean weight that is different from "traditional" quarters.

  Sentiment for raising the speed limit

Does this data indicate that the sentiment for increasing the speed limit is different for the two groups of residents? Let p1 refer to the urban population.

  Randomly selected day from distribution of tickets

The university policy department must write, on average, five tickets per day to keep department revenues at budgeted levels. Suppose the number of tickets written per day follows a Poisson distribution with mean of 6.0 tickets per day. Find the p..

  Possible relationship between variables

Which of the following does not explain a possible relationship between variables when the null hypothesis is rejected

  Reducing substantive tests of transactions

If sales invoices are automatically calculated and posted by a company's computer system, can the auditor reduce substantive tests of transactions for the accuracy objective? Why?

  Removal of taxes on dividend income

In a public opinion poll, 48% of 189 respondents favor an elimination of taxes on dividend income.

  Type error and power of a test

Would the null hypothesis be accepted or rejected in this case?

  Probability of receiving more than three pieces of mail

What is the probability of receiving more than three pieces of junk mail today?

  Estimating the mean tensile strength

Suppose the inspector is unhappy with the previous result and would like to resample. How many rolls should be sampled to estimate the mean tensile strength within 1.5 PSI with 95% confidence?

  Explain the sampling distribution

Find the probability that 665 or fewer college students in the sample send and receive text messages with their phones? Is this result unusual?

  Statistics-variance and expectation

It has been determined empiracally that for a certain egg producer, the number of cracked or broken eggs X, in a randomly slected box containing six eggs, follows approximately the distribution given in the table below:

  Expected return-standard deviation of portfolio

Compute the expected return and standard deviation of each of the two securities. Assume Miss Maple invested $2,500 in Security A and $3,500 in security B. Calculate the expected return and standard deviation for her portfolio.

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