It is known that the length of a certain product X is normally distributed with u=20 inches
Added by Gregory G.
Step 1
In this case, we know that the mean (μ) of the length of product X is 20 inches. However, we need to know the standard deviation (σ) to fully describe the distribution. Show more…
Show all steps
Close
Your feedback will help us improve your experience
Pritesh Ranjan and 65 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
It is known that the length of a certain product X is normally distributed with mu = 23 inches and sigma = 4 inches. How is the probability P(X > 31) related to P(X < 19)? Multiple Choice P(X>31) is greater than P(X<19). No comparison can be made with the given information. P(X>31) is smaller than P(X<19). P(X>31) is the same as P(X<19).
Pritesh R.
A manufacturer knows that their items have a lengths that are approximately normally distributed, with a mean of 19.6 inches, and standard deviation of 4.4 inches.If 31 items are chosen at random, what is the probability that their mean length is greater than 18.2 inches?(Round answer to four decimal places)
Kari H.
Let X ~ Norm(μ,σ²). We know that σ² = 25 and P(X > 20) = 0.9452. Determine the mean μ of this distribution (type only an integer number). (From the standard normal table we have that: P(Z < 1.59) = 0.9441 P(Z < 1.60) = 0.9452 P(Z < 1.61) = 0.9463)
Sri K.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD