Question: 10) It is known that for = 0.1, z /2 = 1.645. Using this fact, solve the following problem. A sample of 68 companies was

10) It is known that for = 0.1, z_/2= 1.645. Using this fact, solve the following problem. A sample of 68 companies was taken to find out how many companies went bankrupt over the period of 10 years. The proportion of the companies which filed bankruptsy appeared to be 0.14 in the sample. What is the left boundary of 90% confidence interval to estimate the proportion of bankrupt companies over the period of 10 years? Assume that the conditions for the samling distribution to be approximately normal are satisfied. Round your answer to 4 decimals.

11) To test the reliability of electric devices, a sample of 35 devices was taken. The mean number of minutes that the devices in the sample performed without errors was 209. The sample standard deviation was 10.9. What was the left boundary of 93% confidence interval to estimate the population mean? Use Excel for all computations and round your final answer to 2 decimals.

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 Law Questions!

On January 4 2021, Runyan Bakery paid $328 million for 10 million shares of Lovery Labeling Company common stock. The investment represents a 30% Interest in the net assets of Lavery and gave Runyan...

Take your time and answer the 6 question . This is a question of business Statistics . Please check the decimal places . Please answer the below questions correctly . Tutors provided with wrong...

Take your time . Please make sure you round your answers correctly slight mistake i lose i will lose my marks . This is a question of business Statistics . Take your time and provide correct answer...

It is known that for = 0.1, z /2 = 1.645. Using this fact, solve the following problem. A sample of 99 comanies was taken to find out how many companies went bankrupt over the period of 10 years. The...

Hello, I'm looking for a solution to this activities. The activities is given in the google drive link below, and any further concerns will be addressed in the comments area . I hope you can assist...

Week 2 Practice Worksheet PSY/315 Version 6 1 University of Phoenix Material Week 2 Practice Worksheet Prepare a written response to the following questions. Chapter 3 1. For the following scores,...

Help me answer the following questions and follow the pages and note that write the letter and the answer besides to it. Will rate you helpful DIRECTIONS: Shade the circle completely that corresponds...

CFE Case Name: PonyUp (PU) ASSIGNMENT 2 TEMPLATE NAME: Please i nsert your name(s). No name (s), no mark. In Assignment 1 you learned about the 'big picture' issues with accounting entities - we...

Explain the difference in the percentages of the products in these two hydroborationreactions: CH3 CH, QH CH, 1) BH3. THF 2) H,O,, NAOH CH,CH-CHCH-CH; + CH;CHCH,CHCH3 (43%) CH,CHCH=CHCH, (57%) 1)...

Simplify as much as possible. Be sure to remove all parentheses and reduce all fractions. 1. 4 - 2(8 - 11) + 6 2. 3[2 - 4(7 - 12)] 3. -4[5 (-3 + 12 - 4) + 2 (13 - 7)]

SO Abints 9 2 0 2 . 2 1 5 . 6 Question 4 The premium is that portion of the bond yield that represents compensation for potential difficulties that might be encountered should the benalined sell the...

Define what is meant by contingent liability. What three categories are used to classify a contingent liability? Give four examples of a contingent liability.

You're trying to determine whether to expand your business by building a new manufacturing plant. The plant has an installation cost of $15 million, which will be depreciated straight-line to zero...

The following trial balance of Scarlatti Corporation does not balance. An examination of the ledger shows these errors.1. Cash received from a customer on account was recorded (both debit and credit)...

(Corrected Trial Balance) The trial balance of Wanda Landowska Company shown below does not balance. Your review of the ledger reveals the following:? (a) Each account had a normal balance. (b) The...

Several years ago, Wilson Blowhard founded a communications company. The company became successful and grew by expanding its customer base and acquiring some of its competitors. In fact, most of its...

update the playGame ( ) function: ( 1 ) define a game with both teams and a scoreboard; ( 2 ) replace the line calling the simulatePossession ( ) function with the simulateGameDay ( ) function; and (...

Personal role: This consists of service to family and friends.

The role of life: It consists of your own service to yourself.

Competence: What knowledge, skills and attitude do I have towards what I am going to do?