This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A random sample of 81 credit sales in a department store showed an average sale of $68.00. From past ... (Read 44 times)

Labomba

  • Full Member
  • ***
  • Posts: 161
on: Mar 25, 2023

Question 1

A random sample of 81 children with working mothers showed that they were absent from school an average of 6 days per term with a standard deviation of 1.8 days. Provide a 95% confidence interval for the average number of days absent per term for all the children.



Question 2

A random sample of 81 credit sales in a department store showed an average sale of $68.00.  From past data, it is known that the standard deviation of the population is $27.00.

a.Determine the standard error of the mean.
b.With a 0.95 probability, what can be said about the size of the margin of error?
c.What is the 95% confidence interval of the population mean?

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by Labomba on Mar 25, 2023

saly

  • Full Member
  • ***
  • Posts: 165
Reply #1 on: Mar 25, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly


Labomba

  • Member
  • Posts: 161
Reply 2 on: Mar 25, 2023
:D TYSM

elyse44

  • Member
  • Posts: 319
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Defibrillator. Defibrillators are devices that supply a voltage charge to the heart in the hope of r Defibrillator. Defibrillators are devices that supply a voltage charge to the heart in the hope of r
In 2013, Americans learned that the federal government massively surveys their phone calls and e-mai In 2013, Americans learned that the federal government massively surveys their phone calls and e-mai
All of the homes in this new neighborhood of Brentwood, California, are for sale, evidence of the co All of the homes in this new neighborhood of Brentwood, California, are for sale, evidence of the co
Sample Exercise Program for Healthy Older Adults Sample Exercise Program for Healthy Older Adults
A 31.1-g sample of Ne gas exerts a certain pressure in a container of fixed volume. What mass ... A 31.1-g sample of Ne gas exerts a certain pressure in a container of fixed volume. What mass ...
Average quarterly presidential approval rating, from Eisenhower to Trump Average quarterly presidential approval rating, from Eisenhower to Trump
Video: Osteoporosis

For a complete list of videos, visit our video library