Every normal model is defined by its parameters the mean

Assignment Help Basic Statistics
Reference no: EM13627391

Every Normal model is defined by its parameters: the mean and the standard deviation.

Suppose that the mean ?= 20, and that 45% of the area is above 30. What is the standard deviation?

A) 60

B) 70

C) 80

D) 90

Reference no: EM13627391

Questions Cloud

A 5-microf capacitor is charged to 30 v and is then : a 5-microf capacitor is charged to 30 v and is then connected across a 10-microh inductor. the maximum value of the
A- explain in terms of the microscopic structure of matter : a- explain in terms of the microscopic structure of matter why materials expand when heated.b- explain what happenes
Find the diameter given flow rate and pressure what : find the diameter given flow rate and pressure what diameter orifice hole d is needed if under ideal conditions the
A cubical block of side length l has a density dc and : a cubical block of side length l has a density dc and floats in a liquid of density dl. the answers should be in terms
Every normal model is defined by its parameters the mean : every normal model is defined by its parameters the mean and the standard deviation.suppose that the mean ? 20 and that
During an earthquake the top of a building oscillates with : during an earthquake the top of a building oscillates with an amplitude of 30cm at 1.5hz.part a what is the magnitude
In the normal model n10016 for iqs what cutoff values bound : in the normal model n10016 for iqs what cutoff values bound the middle 80 of all iqs?a79.50 and 120.50b86.53 and
A singly ionized helium atom he has only one electron in : a singly ionized helium atom he has only one electron in orbit about the nuclues. what is the radius of the ion when it
What is the change in entropy using the 2nd tds relation : 1 k mol of n2 gas ideal is contained in a piston initially at 300k with a volume of 0.1 m3. the piston cylinder is well

Reviews

Write a Review

Basic Statistics Questions & Answers

  A sample of 100 flights for united airlines shows that 64

1 a sample of 100 flights for united airlines shows that 64 are on time. a sample of 100 flights for american shows

  Compute z-score to find the desired probability

48 or fewer will answer the question correctly. What is the z-score that you should look up in the z-table to find the desired probability?

  Random selection book from used-book sale

At a used-book sale, 100 books are adult books and 160 are children's books. Of the adult books, 70 are nonfiction while 60 of the children's books are nonfiction. If a book is selected at random, find the probability that is is:

  Defects in randomly inspected led displays

Two manufacturing facilities produce 1280 × 1024 LED (light-emitting diode) displays. Twelve displays are chosen at random from each lab, and the number of bad pixels is noted for each display.

  The operator of a large production plant would like to

the operator of a large production plant would like to estimate the mean amount of time a worker takes to assemble a

  The average movie admission price for a recent year was 718

the average movie admission price for a recent year was 7.18. the population variance was 3.81. a random sample of 15

  Confidence-interval for the population mean

A random sample of 85 group leaders and supervisors revealed that they worked an average of 6.5 years before being promoted. The population standard deviation was 1.7 years. Using the 0.95 degree of confidence, what is the confidence interval for ..

  Suppose a machines life time in years can be moldeled

suppose a machines life time in years can be moldeled with an exponential distribution with rate of lambda 14.a.

  Determine the r value-regression equation

The x and the y variable in the table below are correlated. Determine the 'R' value, and then determine the regression equation.

  How many treatments are there and find total sample size

How many treatments are there? What is the total sample size? Is there a significant difference at the 5% Level of significance?

  Confidence interval for total population of the students

In a class of 40, 16 driver a car made outside the United States. What is the confidence interval for the total population of students at the 95% level?

  Find interval containing all possible sample means returns

Find the mean and the standard deviation of the sampling distribution of -x and find the interval containing 95.44% of all possible sample means returns.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd