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

Author Question: If the standard deviation of the lifetime of a vacuum cleaner is estimated to be 300 hours, how ... (Read 61 times)

eboni

  • Full Member
  • ***
  • Posts: 135
on: Mar 25, 2023

Question 1

If the population standard deviation of the lifetime of washing machines is estimated to be 900 hours, how large a sample must be taken in order to be 97% confident that the margin of error will not exceed 100 hours?



Question 2

If the standard deviation of the lifetime of a vacuum cleaner is estimated to be 300 hours, how large of a sample must be taken in order to be 97% confident that the margin of error will not exceed 40 hours?

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 eboni on Mar 25, 2023

feiojef

  • Full Member
  • ***
  • Posts: 172
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 56% of students answer this correctly


eboni

  • Member
  • Posts: 135
Reply 2 on: Mar 25, 2023
Great answer, keep it coming :)

adammoses97

  • Member
  • Posts: 337
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Standard Model of Elementary Particles Standard Model of Elementary Particles
Elementary particles included in the Standard Model Elementary particles included in the Standard Model
Standard Alcoholic Drink Sizes Standard Alcoholic Drink Sizes
Reinstall the valve cover being careful to not pinch a wire or vacuum hose between the cover and ... Reinstall the valve cover being careful to not pinch a wire or vacuum hose between the cover and ...
Spring force, crankcase pressure, and intake manifold vacuum work together to regulate the flow rate ... Spring force, crankcase pressure, and intake manifold vacuum work together to regulate the flow rate ...
Standard reduction potentials of the major respiratory electron carriers Standard reduction potentials of the major respiratory electron carriers
Video: Nucleic acid digestion -small intestine

For a complete list of videos, visit our video library