Calculate a 95% confidence interval

Assignment Help Basic Statistics
Reference no: EM13496133

Use the t-Table "The t-Table" for reference.

  • Calculate a 95% Confidence Interval for the following samples:

 

=450, N=200, σ=100
=105, N=50, σ=15
= 19, N = 17, s = 5
= 8, N = 40, s = 1.6
= 8.35, N = 30, s = 1.59

  • Calculate a 99% Confidence Interval for the following samples:

=525, N=110, σ=100
=305, N=85, σ=50
= 19, N = 17, s = 5
= 15, N = 60, s = 2.25
= 25.43, N = 50, s = 5.15

 

Reference no: EM13496133

Questions Cloud

The information on 50 beanie babies given in beanie xls : Beanie Babies are toy stuffed animals that have become valuable collector's items. Beanie World Magazine provided the information on 50 Beanie Babies given in beanie.xls.
The story and name the distribution and its parameters : A doctorhas developed an experimental drug for toe-nail fungus. He needs to test it out on some people to make sure it works. He has a list of 2000 people who could be potential subjects in his study. 1120 of these potential subjects have toe ..
Homes have both a garage and a swimming pool : Suppose that 20% of the homes in a neighborhood has a swimming pool in their backyards and 50% has a garage. 15% of homes have both a garage and a swimming pool.
Promote anti-american propaganda : A Russian SVR agent has 45 million dollars which he can spend to bribe academics, politicians, and bloggers to spread disinformation and to promote anti-American propaganda
Calculate a 95% confidence interval : Calculate a 95% Confidence Interval
Mama stuffin is a popular food item during the fall : Mama's Stuffin' is a popular food item during the fall and winter months, but it is marginal in the spring and summer. Use the following demand forecasts and costs to determine which of the following production planning strategies is best for M..
A singapore edition of business times : In a Singapore Edition of Business Times, diamond pricing we explored. The price of a diamond is based on the diamond's weight, color, and clarity. A Simple random sample of 18 one-half-carat diamonds had the following prices, in dollar's
What is the volatility standard deviation of an equally : What is the volatility (standard deviation) of an equally weighted portfolio of stocks within an industry in which the stocks have a volatility of 50% and a correlation of 40% as the portfolio becomes arbitrarily large?
How many 3-level latin squares are possible : How many 3-level Latin Squares are possible? {A "different" Latin Square in this case is one that does not have the same exact set of 9 treatment combinations as another set of 9.} Provide proof (or, at least "support") for your answer.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Detecting a burglar

A local bank wants to install motion detector burglar alarms. Each has a 70% chance of detecting a burglar. If the bank wants to be 99% certain of detecting a burglar how many need to be installed?

  Find value of critical test statistic-level of significance

If the goal is to test whether less than 75% of the flights depart on time, what is the value of the critical test statistic at the 10% level of significance?

  Estimate relative risk for reduction in the symptom

Generate a 95% CI for the difference in proprotions of particpants reportinga reduction of symptoms between the experimental and placebo groups.

  Description of testing hypotheses on data set

A compute manufacturer is about to unveil a new,faster PC.The new PC is faster but intial tests incidcate there is more variation in the processing time.

  Macburger restaurant chain

The MacBurger restaurant chain claims that the waiting time of customers for service is normally distributed, with a mean of 3 minutes and a standard deviation of 1 minute.

  Explain ability of process to meet customer-s specification

Discuss the ability of the process to meet the customer's specifications. Also, if the customer seeks Six Sigma compliance, what are your recommendations?

  Determining probability loan request is approved

Records also point to that interviewing committee of bank officers approves 85% of individuals they interview. Determine probability that Ann's loan request is approved.

  Independent samples t test and levene test

See if there is a difference in their means and variances.

  Confused bricklayer robot problem

The Confused Bricklayer Robot Problem - Draw a picture to illustrate the initial problem situation and how can you describe a possible solution?

  Find probability of drawing any faulty component

The selection is made at random so that the selection of any component is equally likely. What is the probability of drawing any faulty component if 3 different components are drawn?

  Find the likelihood the sample mean is atleast given value

Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the following questions. What is the likelihood the sample mean is at least $25.00?

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