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 38 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
Gracias!

JaynaD87

  • Member
  • Posts: 368
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Eye ball perfectly labelled (map) Eye ball perfectly labelled (map)
13 Ball 13 Ball
Summary of Standard Precautions Summary of Standard Precautions
A blade and assorted plates for a standard grinder A blade and assorted plates for a standard grinder
The Standard Rain Gauge The Standard Rain Gauge
A manufacturer of cat towers wishes to locate a super assembly facility to meet their cat tower ... A manufacturer of cat towers wishes to locate a super assembly facility to meet their cat tower ...
Video: Michaelis–Menten equation & Kinetic parameters

For a complete list of videos, visit our video library