Question: Need answer with calculation! ). A simple random sample of 100 households located in a city recorded the number of people living in the household,

Need answer with calculation!

). A simple random sample of 100 households located in a city recorded the number of people living in the household, X. It is known that there are 10,000 households in the city. From the sample, we find that the sample mean X = 11 and the sample variance S2 = 25. (a) Find a 95% confidence interval for the population mean using the normal approxi- mation of t distribution. (b) In the same survey, 80% of the (sampled ) households have cable tv. Find a 95% and and 99% confidence interval for the proportion of households having cable tv

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

the question is attached as an image 3. A simple random sample of 100 households located in a city recorded the number of people living in the household, X. It is known that there are 10,000...

Question 4 (15 pts). A simple random sample of 100 households located in a city recorded the number of people living in the household, X. It is known that there are 10,000 households in the city....

1. Which of the following confidence intervals will be the widest? a. 90 percent b. 95 percent c. 80 percent d. 98 percent 2. Narrower confidence intervals are considered more accurate. Which of the...

The probability that a randomly selected person has high blood pressure (the event H) is P(H) = 0.5 and the probability that a randomly selected person is a runner (the event R) is P(R) = 0.2. The...

A random sample of 100 households located in a large city recorded the number of people living in the household, Y, and the monthly expenditure for food, X. The following summary statistics are...

5. A real estate office wants to make a survey in a certain town, which has 50,000 households, to determine how far the head of household has to commute to work. A simple random sample of 1,000...

1 2 pts A development economist is studying income growth in a rural area of a developing country. The last census of the population of this area, several years earlier, showed that mean household...

Answers Only PART ONE Unit 3 Chapter 7: Lesson 7.7 Assignment Pro ress saved Done Score: 0/100 0 17 answered g 'J 0 Question 7 v B 0/6 pts 0 2 :3 5 The city of Raleigh has 6,200 registered voters....

before you do anything I need to know how much is it going to cost me if i let you do all steps of these questions ? PROBLEM 1. A population of 1,000 students spends an average of $10.50 a day on...

What are five common reasons for crashing a project?

In Figure a chain is held on a frictionless table with one-fourth of its length hanging over the edge. If the chain has length L = 28 cm and mass m = 0.012 kg, how much work is required to pull the...

85. LO.8, 9, 12 Tan Corporation purchased depreciable tangible personal property for $100,000 in 2010 and immediately expensed the entire cost under 168(k). In 2012, when the property was worth...

11.15 Management has stated that it will tolerate one stockout per year. The forecast of annual demand for a particular SKU is 100,000 units, and it is ordered in quantities of 10,000 units. The lead...

9. Take four examples from your own everyday life where someone has tried to influence you. Which of the seven influencing techniques mentioned above were used? Did they use any other influencing...

10. First test yourself and then let another member of the group test you in relation to the following questions. If deviations occur, discuss why this might be. What can the results of this test be...

5. Based on your desired future, answer the following questions: (a) What do you want, i.e. what goals have you set yourself? Set up three goals in order of priority. (b) Why do you want this? (c)...