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

Author Question: There is a 60 chance of getting stuck in traffic when leaving the city. On two separate days, what ... (Read 60 times)

Pineapplelove6

  • Hero Member
  • *****
  • Posts: 560
on: Jun 24, 2018
There is a 60 chance of getting stuck in traffic when leaving the city. On two separate days, what is the probability that you get stuck in traffic both days?
 a. .36
  b. .60
  c. 1.20
  d. .30

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 an 80 confidence interval for the population mean.
  e. Construct a 95 confidence interval for the population mean.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Ksh22

  • Sr. Member
  • ****
  • Posts: 297
Reply #1 on: Jun 24, 2018
Answer to Question 1

a

Answer to Question 2

a. No, the sample is large and the standard deviation of the population is known.
b. 6
c. 280
d. 272.32 to 287.68
e. 268.24 to 291.76


Pineapplelove6

  • Member
  • Posts: 560
Reply 2 on: Jun 24, 2018
Wow, this really help

chjcharjto14

  • Member
  • Posts: 342
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

CycleBeads help women use the Standard Days Method. CycleBeads help women use the Standard Days Method.
(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
Wolf Spider in Maricopa City, Arizona, roughly 25mm (1 inch) while legs were retracted Wolf Spider in Maricopa City, Arizona, roughly 25mm (1 inch) while legs were retracted
Working and Living and Playing in the City Dump of Phnom Penh, Cambodia Working and Living and Playing in the City Dump of Phnom Penh, Cambodia
Separate the metatarsals. Create space between the metatarsals by holding onto the sides of the foot ... Separate the metatarsals. Create space between the metatarsals by holding onto the sides of the foot ...
Staphylococcus aureus cells (yellow) stuck in mucus secreted by human nasal epithelial cells. Staphylococcus aureus cells (yellow) stuck in mucus secreted by human nasal epithelial cells.
Video: Medullary osmotic gradient - influencing factors

For a complete list of videos, visit our video library