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

Author Question: A random sample of 121 checking accounts at a bank showed an average daily balance of $280. The ... (Read 61 times)

urmomsucks

  • Full Member
  • ***
  • Posts: 146
on: Mar 25, 2023

Question 1

A random sample of 121 checking accounts at a bank showed an average daily balance of $300 and a standard deviation of $44. Develop a 95% confidence interval estimate for the mean of the population.



Question 2

A random sample of 121 checking accounts at a bank showed an average daily balance of $280. The standard deviation of the population is known to be $66.

a.Is it necessary to know anything about the shape of the distribution of the account balances in order to make an interval estimate of the mean of all the account balances? Explain.
b.Find the standard error of the mean.
c.Give a point estimate of the population mean.
d.Construct a 80% confidence interval estimates for the mean.
e.Construct a 95% confidence interval for the 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 urmomsucks on Mar 25, 2023

sin

  • 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


urmomsucks

  • Member
  • Posts: 146
Reply 2 on: Mar 25, 2023
Gracias!

connor417

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

(a) Mean duration (days) and (b) average maximum depth (mm) of snow cover throughout northern latitu (a) Mean duration (days) and (b) average maximum depth (mm) of snow cover throughout northern latitu
The WISC-IV: Sample Items The WISC-IV: Sample Items
One in three survivors of Hurricane Katrina showed signs of PTSD a month after the tragedy; one in ... One in three survivors of Hurricane Katrina showed signs of PTSD a month after the tragedy; one in ...
Suppose that we have a sample space with five equally likely experimental outcomes: E1, E2, E3, ... Suppose that we have a sample space with five equally likely experimental outcomes: E1, E2, E3, ...
Suppose that we have a sample space with five equally likely experimental outcomes: E1, E2, E3, ... Suppose that we have a sample space with five equally likely experimental outcomes: E1, E2, E3, ...
If the random variable x is exponentially distributed with parameter λ = 4, then P(x ≤ ... If the random variable x is exponentially distributed with parameter λ = 4, then P(x ≤ ...
Video: Four Giant Convection Cells oF Earth

For a complete list of videos, visit our video library