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

Author Question: A population has a mean of 80 and a standard deviation of 7 . A sample of 49 observations will be ... (Read 100 times)

mwit1967

  • Hero Member
  • *****
  • Posts: 501
on: Jun 24, 2018
A population has a mean of 80 and a standard deviation of 7 . A sample of 49 observations will be taken. The probability that the mean from that sample will be larger than 82 is _____.
 a. .5228
  b. .9772
  c. .4772
  d. .0228

Question 2

Ralph's Gas Station is running a giveaway promotion. With every fill-up of gasoline, Ralph gives out a lottery ticket that has a 25 chance of being a winning ticket. Customers who collect 4 winning lottery tickets are eligible for the BIG SPIN for large payoffs. What is the probability of qualifying for the big spin if a customer fills up: (a) 3 times; (b) 4 times; (c) 7 times?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

moormoney

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Jun 24, 2018
Answer to Question 1

d

Answer to Question 2

a . 0
b. .0039
c. .0705


mwit1967

  • Member
  • Posts: 501
Reply 2 on: Jun 24, 2018
Wow, this really help

AmberC1996

  • Member
  • Posts: 317
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Details of plant population biology from repeat photography: (a) saguaro cactus in MacDougal Crater, Details of plant population biology from repeat photography: (a) saguaro cactus in MacDougal Crater,
Range of Motion of the Wrist and Hand Joints, Radial and Ulnar Deviation of the Wrist Range of Motion of the Wrist and Hand Joints, Radial and Ulnar Deviation of the Wrist
Sample Exercise Program for Healthy Older Adults (cont.) Sample Exercise Program for Healthy Older Adults (cont.)
Sample prescriptions of antibiotics for dental infections. Sample prescriptions of antibiotics for dental infections.
Population size, 1970 - 2050 Population size, 1970 - 2050
Changes in the Age Structure of the Population, 1950–2050 Changes in the Age Structure of the Population, 1950–2050
Video: ETC Protein Complexes & Chemiosmosis (Total ATP Production and ATP Synthase)

For a complete list of videos, visit our video library