« previous next »

Author Question: A population has a mean of 180 and a standard deviation of 24 . A sample of 64 observations will be ... (Read 185 times)

naturalchemist

  • Hero Member
  • *****
  • Posts: 542
on: Jun 24, 2018
A population has a mean of 180 and a standard deviation of 24 . A sample of 64 observations will be taken. The probability that the mean from that sample will be between 183 and 186 is _____.
 a. 0.1359
  b. 0.8185
  c. 0.3413
  d. 0.4772

Question 2

The number of customers at Winkies Donuts between 8:00 A.M. and 9:00 A.M. is believed to follow a Poisson distribution with a mean of 2 customers per minute.
 a. During a randomly selected one-minute interval during this time frame, what is the probability of 6 customers arriving to Winkies?
  b. What is the probability at least 2 minutes elapse between customer arrivals?


aprice35067

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jun 24, 2018
Answer to Question 1

a

Answer to Question 2

a. .0120
b. .0183


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Mononucleosis is caused by the Epstein–Barr virus. Symptoms of the infectious disease are swollen pa Mononucleosis is caused by the Epstein–Barr virus. Symptoms of the infectious disease are swollen pa
World Population Growth, Past 10,000 years World Population Growth, Past 10,000 years
Write the equation for the population y at any instant Write the equation for the population y at any instant
Population distribution (dispersion) Population distribution (dispersion)
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, ...
Population distribution patterns Population distribution patterns
Video: Griffith's experiments

For a complete list of videos, visit our video library