Confidence intervals for the population mean annual

Assignment Help Basic Statistics
Reference no: EM131055866

A sample of 400 First time home buyers found that the mean of annual household income was $60,000 and the sample standard deviation in income was $14,500. Construct 95% confidence intervals for the population mean annual household income for the first time home buyers.

Reference no: EM131055866

Questions Cloud

Relation between class rank and popularity among peers : A researcher wants to examine the relation between class rank and popularity among peers. Class rank is provided by the school and includes each student's rank in order. The researcher assesses popularity using a likability measure that provides s..
Population of all gasoline mileages : Suppose that the population of all gasoline mileages is normally distributed with mean µ = 31.5 mpg and standard deviation σ = 0.8 mpg. Let y denote a mileage randomly selected from this population. Find the probabilities:
Probability that a female customer : Furthermore, the data shows that 35% of the females who visited his store purchased a cell phone, while 20% of the males who visited his store purchased a cell phone. What is the probability that a female customer will purchase a cell phone?
Format and structure appropriate to the rhetorical situation : This assignment is intended to help you reflect in very specific detail on how your writing, critical thinking, critical reading, and visual literacy skills have developed over the course of the semester. Your audience for this project is me, your..
Confidence intervals for the population mean annual : A sample of 400 First time home buyers found that the mean of annual household income was $60,000 and the sample standard deviation in income was $14,500. Construct 95% confidence intervals for the population mean annual household income for the f..
Estimate descriptive statistics for each investment : Estimate descriptive statistics for each investment via Excel. Compare the two investments. Be sure to comment on the central tendency, variability and shape of these two investments
Complete within the contracted time period : A large construction firm estimates that 25% of the jobs that it manages are not completed within the contracted time period. It looks at a random sample of 8 jobs that it has managed.  a. What is the probability that less than 3 of the jobs were ..
Createa gantt chart from the work break down structure : Using the schedule data in the schedule table above, create a Gantt chart comparing actual versus planned schedule performance. Summarize in words what you see project status to beat this time.What do you predict regarding the final cost and final ..
Question regarding the withdrawals or deposits : After two years, he stops making monthly contributions, because the interest rate changes to 15% per year compounded every two months, if no withdrawals or deposits are made for 4 years, what will the balance be in this account?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Accuracy of the interval without changing the confidence

For a random sample of 10 fifth generation iPod music players, the mean battery life  was 9.47 hours with a standard deviation of 2.14 hours.

  The height of a building is measured 32 times the average

the height of a building is measured 32 times. the average of the measurements is 206 feet with standard deviation1.8

  Determine critical-zcr value

Select the level of significance, and determine critical,  ZCR   value.

  A study of fill volumes is conducted at a food canning

a study of fill volumes is conducted at a food canning factory to determine the level of consistency between the two

  Describe a null and alternative hypothesis

A random sample of 15 items is taken, producing a sample mean of 2.364 with a sample variance of .81. Assume x is normally distributed and construct a 90% confidence interval for the population mean. Write a statistical hypothesis, Describe a null ..

  Construct and interpret a 99 confidence interval to

breast-feeding mothers secrete calcium into their milk. some of the calcium may come from their bones so mothers may

  Standard deviation to find the z-score

Use the population mean and standard deviation to find the z-score corresponding to 14.5%, the rate offered by the Bar Harbor Bank and Trust Company. Is this above or below the average?

  What is the decision rule for a hypothesis test about the

what is the decision rule for a hypothesis test about the dierence between two population means if the p -value is

  Random sample of having personal computer

According to recent surverys, 53% of households have personal computers. if a random sample of 175 households is selected, what is the probability that more then 75 but fewer than 110 have a personal computer?

  Prove that an entire function that omits the value

Prove that an entire function that omits the value 0 and 1 is a constant.

  The american college health association produced the

the american college health association produced the national college health assessment andy gardiner surfacing from

  Sub-dividing numerical values

Sub-dividing Numerical Values

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