Answered: (5-7 min pentru rezolvare) Diameters…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 4CYU

See similar textbooks

Related questions

Question

(5-7 min pentru rezolvare)

Diameters of balls are normally distributed about the mean of 120 mm with a standard deviation of 3 mm. A random sample of 45 balls is selected. What is the probability that the average diameter will be less than 119 mm?

!!! Important !!!

When computing z do not approximate, calculate everything in one formula.

After computing z value, approximate the value up to 2 digits after the comma.

When writing the answer, use the dot sign (.) not the comma.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Expert Solution