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

Author Question: The mean diameter of a ball bearing produced by a certain manufacturer is 0.80 cm with a standard ... (Read 101 times)

ts19998

  • Hero Member
  • *****
  • Posts: 531
on: Jun 24, 2018
The mean diameter of a ball bearing produced by a certain manufacturer is 0.80 cm with a standard deviation of 0.03 cm. A sample of 36 ball bearings is randomly selected from a production run. Use Excel to answer the following questions:
 a. What is the probability that the sample of ball bearings will have a mean less than 0.798 cm?
  b. What is the probability that the sample of ball bearings will have a mean of at least 0.815 cm?
  c. What is the probability that the sample of ball bearings will have a mean between 0.798 and 0.815 cm?
 d. For samples of size 36, 15 of all sample means are at most what diameter?

Question 2

For a standard normal distribution, the probability of z  0 is _____.
 a. 0
  b. .5
  c. .5
  d. 1


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Dinolord

  • Sr. Member
  • ****
  • Posts: 313
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. .344578
=NORM.DIST(0.798,0.8,0.005,TRUE)
b. .00135
=1  NORM.DIST(0.815,0.8,0.005,TRUE)
c. .654072
=NORM.DIST(0.815,0.8,0.005,TRUE)
NORM.DIST(0.798,0.8,0.005,TRUE)
d. .794818
=NORM.INV(0.15,0.8,0.005)

Answer to Question 2

c


ts19998

  • Member
  • Posts: 531
Reply 2 on: Jun 24, 2018
YES! Correct, THANKS for helping me on my review

T4T

  • Member
  • Posts: 348
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

The light produced by fireflies is the result of a reaction The light produced by fireflies is the result of a reaction
Oxidation of Fe-bearing minerals gives rocks, soils rusty color. Oxidation of Fe-bearing minerals gives rocks, soils rusty color.
A standard employment application form may be used. A standard employment application form may be used.
A cutaway of a typical water pump showing the long bearing assembly and the seal. The weep hole is ... A cutaway of a typical water pump showing the long bearing assembly and the seal. The weep hole is ...
How to write a quadratic equation in standard form when a graph is given How to write a quadratic equation in standard form when a graph is given
The Plunger and Barrel of a Standard Syringe The Plunger and Barrel of a Standard Syringe
Video: Dendrite Animation

For a complete list of videos, visit our video library