Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

To develop a 90 percent confidence interval for the population mean.

Families USAa monthly magazine that discusses issues related to health and health costs, surveyed 20 of its subscribers. It found that the annual health insurance premiums for a family with coverage through an employer averaged $10,979. The standard deviation of the sample was $1,000.

a. Based on this sample information, develop a 90 percent confidence interval for the population mean yearly premium.

b. How large a sample is necessary to find the population mean within $250 at 99 percent confidence?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M922192

Have any Question? 


Related Questions in Statistics and Probability

1nbspthe owner of a professional basketball team claims

1) The owner of a professional basketball team claims that the mean attendance at games is over 25,000 and therefore the team needs a new arena. Determine whether the hypothesis test for this claim is left-tailed, right- ...

1 here are several situations in which there is an

1. Here are several situations in which there is an incorrect application of the ideas in statistical inference. Write a sentence or two in each case explaining what is wrong and why it is wrong. (a) A significance test ...

1 consider a test of h0 mu le 100 versus h1 mu gt 100

1. Consider a test of H0 : μ ≤ 100 versus H1 : μ > 100. Suppose that a sample of size 20 has a sample mean of X = 105. Determine the p-value of this outcome if the population standard deviation is known to equal  (a) 5; ...

Of the people who fished at clearwater park today 63 had a

Of the people who fished at Clearwater Park today, 63 had a fishing license, and 27 did not. Of the people who fished at Mountain View Park today, 60 had a license, and 40 did not. (No one fished at both parks.) Suppose ...

The percentage of people with advanced degrees is 165 on

The percentage of people with advanced degrees is 16.5% on average if 1000 people are randomly selected what is the probability that the percentage of these poeple with advanced degrees is between 17% and 18.5%?

Let x have a poisson distribution with parameter lambda

Let X have a Poisson distribution with parameter lambda. Show that E(X)= lambda directly from the definition of expected value. [Hint: The first term in the sum equals 0, and then x can be canceled. Now factor out lambda ...

A using the table of critical values of t in appendix a-2

a. Using the table of critical values of t in Appendix A-2, find the critical value of t for an experiment in which there are 28 participants, using an alpha level of .05 for a one-tailed test b. Find the critical value ...

Let n y fiiisinn s p be an aumann model of incomplete

Let (N, Y, (F i ) i ∈N , s, P) be an Aumann model of incomplete information with beliefs, and let W ⊆ Y be an event. Prove that (N,W, (F i  ∩ W) i ∈N  , P(· | W)) is also an Aumann model of incomplete information with be ...

Problem 1 a menu offers a choice of 3 salads 8 main dishes

Problem 1. A menu offers a choice of 3 salads, 8 main dishes, and 5 desserts. How many different meals consisting of one salad, one main dish, and one dessert are possible? Problem 2. Wing has different books to arrange ...

Putting measurement to workthis exercise gives you the

Putting Measurement to Work This exercise gives you the opportunity to develop a measurement strategy of your own. 1. Identify an area of the social sciences you know something about (aging, marriage and the family, crim ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen