Questions LLC
Login
or
Sign Up
Ask a New Question
Normal Distribution
Page 9
Questions (2,042)
For a normal distribution, identify the z-score location that would separate the distribution into sections so that there is:
a)6
3 answers
asked by
Anonymous
1,366 views
The mean incubation time for a type of fertilized egg kept at a certain temperature is 21 days suppose that the incubation times
3 answers
asked by
Wanda
129 views
If the height of 200 students is normally distributed with mean of 65 inches & std deviation 3.5 inches. How many students have
3 answers
asked by
Anonymous
191 views
1. A set of test scores is normally distributed with a mean of 76 points and a standard deviation of 8 points. Round your
3 answers
asked by
bee
514 views
Find the area under the standard normal curve which lies between z = +1.25
and z = +2.11
3 answers
asked by
dave
534 views
All the houses in Stanton County have a mean size of 1,650 square feet with a standard deviation of 320. Assume the distribution
3 answers
asked by
jessica
788 views
Assume that the weights of men are normally distributed with a mean of 182.9 pounds and a standard deviation of 40.8 pounds.
3 answers
asked by
c.c.
496 views
In the following problem, check that it is appropriate to use the normal approximation to the binomial. Then use the normal
3 answers
asked by
debra
423 views
The tensile strength of paper used to make grocery bags is an important quality characteristic. It is known that the strength is
3 answers
asked by
matt
1,097 views
Use the table to answer each question. Note: Round z-scores to the nearest hundredth and then find the required A values using
3 answers
asked by
rose
585 views
An electronic product takes an average of 9 hours to move through an assembly line. If the standard deviation is 0.7 hours, what
3 answers
asked by
van
320 views
Assume that the height of a type of tree has a normal probability distribution with a mean of 55.2 ft and a standard deviation
1 answer
asked by
van
313 views
An economics exam is worth 60 points and is taken by 500 students. the scores on the exam are normally distributed with the
3 answers
asked by
David
434 views
The mean one-way commute to work is 25.8 minutes. The longest one-way travel time is in New York City, where the mean time is
3 answers
asked by
Latina
726 views
Solve the problem. Round to the nearest tenth unless indicated otherwise. The weights of certain machine components are normally
3 answers
asked by
maczindahouse
1,347 views
In a certain country the heights of adult men are normally distributed with a mean of 69.4 inches and a standard deviation of
3 answers
asked by
Brendora
1,331 views
The annual salaries of all employees at a financial company are normally distributed with a mean = $34,000 and a standard
3 answers
asked by
suzanne
1,936 views
A milk company unconditionally guarantees that an unopened, properly refrigerated container of its milk will be fresh for 5 days
3 answers
asked by
Sally
691 views
If the student ratings of the overall effectiveness of professors is normally distributed with a mean of 5 and a standard
2 answers
asked by
Chandler
918 views
The weights of ice cream cartons produced by a manufacturer are normally distributed with a mean weight of 10 ounces and a
2 answers
asked by
Joe
1,198 views
The average U.S. yearly capita consumption of citrus fruit is 26.8 pounds. Suppose that the distribution of fruit amounts
3 answers
asked by
Marnee
1,821 views
Assume that the mean systolic blood pressure of normal adults is 120 millimeters of mercury (mm Hg) and the standard deviation
3 answers
asked by
Anonymous
1,421 views
The heights of 200 kindergarten students are normally distributed with a mean of 40 and a standard deviation of 1.8 inches.
4 answers
asked by
Dee
2,073 views
Please help me, I have know idea how to do this and the assignment is due today!
A manufacturer is producing metal rods, whose
5 answers
asked by
Mandy
917 views
If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, use the
3 answers
asked by
angela
877 views
The diameters of bolts produced by a certain machine are normally distributed with a mean of 0.25 inches and a standard
3 answers
asked by
angela
1,121 views
Weights of women are normally distributed with mean 143 pounds and standard deviation 29 pounds. If 36 women are randomly
3 answers
asked by
anon
1,076 views
A machine for filling 2-liter bottles of soft drink delivers an amount to each bottle that varies from bottle to bottle
3 answers
asked by
kuhel
1,561 views
The mean on a Advanced Algebra test was 78 with a standard deviation of 8. If the test scores are normal distributed, find the
3 answers
asked by
Anonymous
1,104 views
the life span of an electric bulb is normally distribution with mean 5500 light hours and standard deviation of 1200 light hours
3 answers
asked by
ragul
759 views
A machine fills 12 ounce bottles with soda. For the machine to function properly, the standard deviation of the sample must be
3 answers
asked by
Sally
1,944 views
The height of a tree will be measured using a clinometer. For this device, the measurement error has a normal distribution with
3 answers
asked by
Emily
648 views
Find the z scores that separate the middle 59% of the distribution from the area in the tails of the standard normal
3 answers
asked by
bee
2,516 views
A survey among freshman at a certain university revealed that the number of hours spent studying the week before final exams was
3 answers
asked by
Tommy
1,259 views
When Mrs. Myles gave a test, the scores were normally distributed with a mean of 72 and a standard deviation of 8. This means
3 answers
asked by
Jake
1,162 views
A camera store sells 40 pairs of binoculars per week on average with a standard deviation of 6. What is the probability that the
3 answers
asked by
Anonymous
476 views
suppose that prices of a certain model of new homes are normally distributed with a mean of $150,000 use the rule to find the
3 answers
asked by
john
1,769 views
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lb and
4 answers
asked by
slomomo
2,480 views
The average age of doctors in certain hospital is 43 years old. Suppose distribution of ages is normal and the standard
4 answers
asked by
stuart joel
890 views
Daily water intake (including water used in drinks such as coffee, tea and juice) for Canadian adults follows a normal
4 answers
asked by
Mel
674 views
X is a normally distributed random variable X with mean 15 and standard deviation 0.25. Find the values xL and xR of X that are
4 answers
asked by
Anonymous
1,310 views
the weights of newborn babies are distributed normally, with the mean of approximately 115 oz and a standard deviation of 20 oz.
3 answers
asked by
michelle
1,687 views
5. A soft drink dispensing machine uses paper cups that hold a maximum of 12 ounces. The machine is set to dispense a mean of 10
4 answers
asked by
Sarah
1,643 views
In this question, use Excel functions rather than Normal distribution tables.
The number of new cars sold by "Ma's New Car
4 answers
asked by
Sylvia
2,139 views
Scores on a test are normally distributed with a mean of 75 and a standard deviation of 8. Estimate the probability that a
4 answers
asked by
clara
2,225 views
Scores for men on the verbal portion of the SAT-I test are normally distributed with a mean of 509 and a standard deviation of
3 answers
asked by
TJ
895 views
An industrial engineer has found that the standard household light bulbs produced by a certain manufacturer have a useful life
3 answers
asked by
bappy
913 views
Consider the standard normal distribution. Find the area for the z-score -0.75. Draw a picture of this distribution showing the
3 answers
asked by
LaToya
1,838 views
The height of an adult male is known to be normally distributed with a mean of 69 inches and a standard deviation of 2.5 inches.
4 answers
asked by
judy
2,492 views
In a normal distribution of scores, four participants obtained the following deviation scores: +1, -2, +5, and -10. (a) Which
2 answers
asked by
Sammie
1,150 views
Pages
1
2
3
4
5
6
7
8
9
10
Parent Categories (44)
Basic Concepts
Confidence Interval
Confidence intervals
Continuous Distributions
Continuous Probability Distributions
Data Analysis
Data Analysis and Interpretation
Data Analysis and Statistics
Data distribution
Data Distributions
Descriptive Statistics
Distribution
Distribution Analysis
Distribution of Data
Distribution of Variables
Distributions
Educational Statistics
Frequency distribution
Frequency Distributions
Hypothesis Testing
Mathematics/Statistics
Measures of Central Tendency and Dispersion
Population and Sampling
Probability
Probability & Statistics
Probability and Distribution
Probability and Distributions
Probability and Statistics
Probability Calculations
Probability Distribution
Probability distributions
Probability Theory
Random Variables
Sampling
Sampling distribution
Statistical Analysis
Statistical Distributions
Statistical Methods
Statistics
Statistics and Probability
Statistics or Probability
Statistics/Mathematics
Statistics/Probability
Variables