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 199 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
YES! Correct, THANKS for helping me on my review

JCABRERA33

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

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?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Sample equipment maintenance log. Sample equipment maintenance log.
(a) A turbidometry detector measures laser light directly across from the light source. The sample, ... (a) A turbidometry detector measures laser light directly across from the light source. The sample, ...
The population of algae is compared to the population of corals in a given sampling area The population of algae is compared to the population of corals in a given sampling area
Some Cases of Population Aging Some Cases of Population Aging
Ulnar deviation Ulnar deviation
The Plunger and Barrel of a Standard Syringe The Plunger and Barrel of a Standard Syringe
Video: Major Elements in Biological Molecules: Lipids

For a complete list of videos, visit our video library