MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
expand_more
expand_more
format_list_bulleted
Related questions
Concept explainers
Question
Transcribed Image Text:A random sample of 121 bottles of cologne showed an average content of 4 ounces. It is known that the standard
deviation of the contents (i.e., of the population) is 0.22 ounces. In this problem the 0.22 is
O A. a parameter
O B. a statistic
O C. the standard error of the mean
O D. the average content of colognes in the long run
Transcribed Image Text:If the outcomes of a discrete random variable follow a Poisson distribution, then their:
O A. median equals the standard deviation.
O B. median equals the variance.
O C. mean equals the variance.
O D. mean equals the standard deviation.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 2 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
- 2. What percent of values of a normally distributed variable lie between the mean and two standard deviationsbelow the mean?A. 47.5%B. 34% C. 95% D. 68%arrow_forwardIdentify the data value corresponding to the indicated percentile. The amount of sleep an adult gets per day is normally distributed with a mean of 7 hours and a standard deviation of 1.5 hours. Five percent of adults sleep more than how many hours per day?arrow_forwardQ1 Part 1.What symbols are used for the mean and standard deviation for a sample in a research report? However, under what circumstances would a score that is above the mean by 5 points appear to be very close to the mean?a. The mean is identified by the letter M and the standard deviation is represented by a lowercase s.b. The mean is identified by the letter M and the standard deviation is represented by SD.c. The mean is identified by a lowercase letter m and the standard deviation is represented by a lowercase s.d. The mean is identified by a lowercase letter m and the standard deviation is represented by SD. ————————————————————————————————a. When the mean is much greater than 5b. When the mean is much less than 5c. When the standard deviation is much greater than 5d. When the standard deviation is much less than 5arrow_forward
- For a population with a population mean = 60 and a standard deviation = 9, find the z-score for each of the following X values. A. X = 75 B. X = 53arrow_forwardFor a sample with a standard deviation of s = 12, a score of X = 42 corresponds to z = –0.50. The mean for the sample is M = ___. a. 48 b. 45 c. 40 d. 36arrow_forwardA population data set has a normal distribution has a mean µ = 28 and a standard deviation o = 4.2. Which of the following values best represents the 80th percentile of this distribution? 31.5 32.2 24.5 O 28.84arrow_forward
- A population has a mean μ = 72 and a standard deviation a=27. Find the mean and standard deviation of a sampling distribution of sample means with sample size H n=81. IIE R (Simplify your answer.) (Simplify your answer.) a: =arrow_forwardThe following is a frequency distribution of ages of residents of a senior citizens' home in New York. Fill in the midpoints, then calculate the mean and the standard deviation. Round to two decimal positions. You may assume the data represents a population. Ages of Residents Midpoints Frequency 54−6254-62 3 63−7163-71 4 72−8072-80 1 81−8981-89 2 Mean (μμ)= Standard deviation (σσ) = Round the standard deviation up to 2 decimal places if necessary. Hint: Use the midpoint for each class (ages of residents).arrow_forwardFor a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 39 beats per minute, the mean of the listed pulse rates is x = 78.0 beats per minute, and their standard deviation is s = 13.1 beats per minute. %3D a. What is the difference between the pulse rate of 39 beats per minute and the mean pulse rate of the females? b. How many standard deviations is that [the difference found in part (a)]? c. Convert the pulse rate of 39 beats per minutes to a z score. d. If we consider pulse rates that convert to z scores between - 2 and 2 to be neither significantly low nor significantly high, is the pulse rate of 39 beats per minute significant? a. The difference is beats per minute. (Type an integer or a decimal. Do not round.)arrow_forward
- The shape of a given population distribution is normal with a mean of μ = 85 and a standard deviation of o= 6.5. For these parameters, transform a raw score of X = 100.5 into its corresponding z score. Round to the nearest tenths place if a fraction. The z score is: O 2.4 -3.7 -3.4 09.2 The correct z-score is not listed.arrow_forwardThe number of potholes in any given 1 mile stretch of freeway pavement in Pennsylvania has a bell-shaped distribution. This distribution has a mean of 44 and a standard deviation of 11. Using the empirical rule, what is the approximate percentage of 1-mile long roadways with potholes numbering between 22 and 55?Do not enter the percent symbol.ans = ___________ %arrow_forwardThe weights of laboratory cockroaches can be modeled with a Normal distribution having mean 80 grams and standard deviation 2 grams. The following figure is the Normal curve for this distribution of weights. A DE EL F h About what percent of the cockroaches have weights between 76 and 84 grams? O 68% O 95% O 99.70% O 47.50%arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning 
Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSON
The Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. Freeman
Introduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman
MATLAB: An Introduction with Applications
Statistics
ISBN:9781119256830
Author:Amos Gilat
Publisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th...
Statistics
ISBN:9781305251809
Author:Jay L. Devore
Publisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C...
Statistics
ISBN:9781305504912
Author:Frederick J Gravetter, Larry B. Wallnau
Publisher:Cengage Learning
Elementary Statistics: Picturing the World (7th E...
Statistics
ISBN:9780134683416
Author:Ron Larson, Betsy Farber
Publisher:PEARSON
The Basic Practice of Statistics
Statistics
ISBN:9781319042578
Author:David S. Moore, William I. Notz, Michael A. Fligner
Publisher:W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:9781319013387
Author:David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:W. H. Freeman