Point estimate of the population mean

Assignment Help Basic Statistics
Reference no: EM13104376

The 2006 General Social Survey asked, "what do you think is the ideal number of children for a family to have?" The 1097 females who responded had a median of 2, mean of 3.16, and a standard deviation of 1.91.

a) What is the point estimate of the population mean?

b) Find the standard error of the sample mean.

c) The 95% confidence interval is (3.05, 3.28). Interpret.

d) Is it plausible that the population mean μ = 2? Explain

Reference no: EM13104376

Questions Cloud

Average scores on golf course : A sample of 84 golfers showed that their average score on a particular golf course was 89.05 with a standard deviation of 3.47.
Developing confidence intervals : A car rental office checks out an average of 30 cars per day with a standard deviation of 8 cars. If a sample of 25 days of operation is selected and the sample mean is computed.
How far is it to the horizon : A person is standing at the edge of the water and looking out at the ocean (see figure). The height of the person's eyes above the water is h = 1.8 m, and the radius of the Earth is R = 6.38 x 106 m. (a) How far is it to the horizon? In other word..
Creating material requirement plan : The MPS for product A calls for 100 units to be completed in week 4 and 200 units in week 7 (the lead time is 1 week). Spare part demand for Item B is 10 units per week.
Point estimate of the population mean : The 2006 General Social Survey asked, "what do you think is the ideal number of children for a family to have?" The 1097 females who responded had a median of 2, mean of 3.16, and a standard deviation of 1.91.
Proportion of adults planning on buying car : A marketing research firm wishes to estimate the proportion of adults who are planning to buy a new car in the next 6 months. A simple random sample of 100 adults led to 22 who were planning to buy a new car in the next 6 months.
Find magnitude and direction of its resultant displacement : A bird, starting from its nest (we'll call that the origin), flies 24.0 km due southeast. It then changes directions and flies 26.0 km in a direction 60° north of east. Find the magnitude and direction of its resultant displacement.
Explain legitimate form of popular media culture : Select a form of popular media which you are passionate about. Write down thesis statement stating how and why it is more than just the piece of entertainment.
Calculating confidence intervals and proportion : Given the data set body-weight.sav, use SPSS to calculate the 90%, 95% and 99% confidence intervals for the mean of the variable weight.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Correctness of the prediction

At α = 0.05, is the correctness of the prediction different for the two types of cola drinkers?

  Prediction interval based on multiple-regression equation

Construct a 98% prediction interval for the selling price of a 4l- year old house having 4500 square feet, 13 rooms, and an attached garage.

  Differences between hypotheses testing methods

Can you describe in detail the differences in ANOVA and the five-step hypothesis testing method?

  Applied statistics in nursing

Explain the importance of random sampling. What problems/limitations could prevent a truly random sampling and how can they be prevented?

  Calculate the test statistic for the goodness of fit

In an experiment in which a die was rolled 188 times it was counted up how many times each face came up. The results are as follows:

  Binomial distribution to find out the mean

Binomial distribution to find out the mean also standard deviation. Variance and standard deviation of a lot of 300 calculators.

  Anova and nonparametric tests

Based on your experience using ANOVA and Nonparametric tests, what additional information would you recommend to the key decision maker solve the challenges given in a company that provides software solutions to wide range of clients?

  Difference among two proportion test by large sample test

To test whether the significant difference between two proportion test using large sample test.

  Descriptive statistics for given data

Given 7 male individuals in a Physical Education course, the number of sit ups each individual can do in a one minute period was recorded:

  Determining sampling technique

After polling every 8 th graduate, a major university estimated annual salary of its alumni to be $103,000.  What sampling technique was used?

  Population grows every year is fixed or constant

Assume that the amount your town's population grows every year is fixed or constant. Utilize your equation in part b to approximate the population in the year 2030.

  Probability application-bank accounts

A local bank reports that 80 percent of its customers maintain a checking account, 60 percent have a savings account, and 50 percent have both.

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