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
Question
![If you wanted to be 99% confident that your estimate of the
average Florida rainfall was within 3 inches of the true average, how
many places in Florida should you survey? Use a standard
deviation of 9 inches per year.
(i) What would be the z* critical value required to answer the
question? [Select ]
(ii) What is the answer to the question: how many places in Florida
should you survey? [ Select ]](https://content.bartleby.com/qna-images/question/67cd3f4f-dcc4-44d4-83f4-13332296f2a9/880b97c8-fa5c-4a38-af46-a4b46a9b9538/ed9rk8b_processed.png)
Transcribed Image Text:If you wanted to be 99% confident that your estimate of the
average Florida rainfall was within 3 inches of the true average, how
many places in Florida should you survey? Use a standard
deviation of 9 inches per year.
(i) What would be the z* critical value required to answer the
question? [Select ]
(ii) What is the answer to the question: how many places in Florida
should you survey? [ Select ]
Transcribed Image Text:The data for this exercise was obtained from
https://www.currentresults.com/Weather/Florida/yearly-florida-rainfall.php 2 .
Tourists often hear about the wonderful, warm Florida weather; they live in
blissful ignorance of the freezes experienced in the northern parts of the
state. A tourism organization wants to open up the entire state to tourists.
They know that not everyone is drawn to hot, sunny beaches, so they want
to advertise the advantages of visiting other parts of the state. One of the
first things they need to do is educate potential tourists about the weather.
And part of that involves informing them about the average rainfall across
the state. Your task is to help the tourism organization figure out what the
average rainfall in Florida is like. Rainfall data is provided below.
The table below gives the typical yearly rainfall in some parts of Florida.
Place
Rainfall
(inches per year)
Monticello
56.8
Niceville
71.0
Tampa
46.3
Lakeland
54.8
St. Augustine
Lake City
49.0
52.6
50.8
Ocala
Key West
39.8
Hialeah
70.4
Everglades Park, Royal Palm
Tavernier (Key Largo)
55.0
46.0
West Palm Beach
62.3
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
- The frequency distribution was obtained using a class width of 0.5 for data on cigarette tax rates. Use the frequency distribution to approximate the population mean and population standard deviation Compare these results to the actual mean µ = $1.667 and standard deviation o=$1.073. Click the icon to view the frequency distribution for the tax rates. The population mean is $ (Round to three decimal places as needed) The population standard deviation is $ (Round to three decimal places as needed.) Compare these results to the values found using the actual data. OA. The grouped values are both slightly larger. OB. The grouped values are both slightly smaller. OC. The grouped mean is slightly larger, while the grouped standard deviation is slightly smaller. OD. The grouped mean is slightly smaller, while the grouped standard deviation is slightly larger. Frequency distribution of cigarette tax rates Tax Rate 0.00 0.49 0.50-0.99 1.00-1.49 1.50-1.99 2.00-2.49 2.50-2.99 3.00-3.49 3.50-3.99…arrow_forwardSolve this for mearrow_forwardThe scores on a psychology exam were normally distributed with a mean of 56 and a standard deviation of 4. A failing grade on the exam was anything 2 or more standard deviations below the mean. What was the cutoff for a failing score? Approximately what percentage of the students failed? ..... The cutoff for a failing score was 49 (Simplify your answer.) Approximately 2.28 percent of the students failed. (Round to one decimal place as needed.)arrow_forward
- Colin checked the hit counters of 5 websites to track how many people visited them yesterday. He noted: 5 visitors 1 visitor 4 visitors 9 visitors 9 visitors What was the mean absolute deviation of the numbers of visitors? If the answer is a decimal, round it to the nearest tenth. mean absolute deviation (MAD): visitorsarrow_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 overbar equals 77.0 beats per minute, and their standard deviation is sequals 21.2 beats per minute. a. What is the difference between the pulse rate of39 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 of39 beats per minutes to a z score. d. If we consider data speeds that convert to z scores between minus 2 and 2 to be neither significantly low nor significantly high, is the pulse rate of 39 beats per minute significant?arrow_forwardA survey was taken in a college class asking how many people lived in each student's household, with the sample data collected as numbers of people and frequencies. The data collected is given in the table below. Number of People (x) Number of Respondents in Survey (f) 1 3 2 6 3 16 4 4 Calculate the standard deviation of the above sample table of frequencies: Round your answer to 2 decimal places and be sure to use the correct formula.arrow_forward
- Sofia wants to determine the average household expenditure on lawn care products per year. She believes that the standard deviation is 19.2. She wants to be 95% confident. How many people does she need to ask for a margin of error of $2.50? Round the answer as you should for this type of problem.(Don't worry if Canvas adds extra zeros after the decimal.)arrow_forwardJamie would like to estimate the mean amount households in the small town of Ringwood spend on rent/mortgage per month. She wants her estimate to be within $25 off the population mean with 95% confidence. If she is willing to assume the population standard deviation is $288, how many households must she sample?arrow_forwardA student studying statistics wants to look at data for his favorite sport, American football. He collects data on the lengths of 100 field goals from various games over several seasons. Would it be more appropriate to find a sample standard deviation or population standard deviation in this situation? Select the correct answer below: A. Sample standard deviation B. Population standard deviationarrow_forward
- In a data set with a mean of 28 and standard deviation of 6, what is the value of the standard unit for an observation of 19? (This is also sometimes called a z-score.) Use 2 decimal places in your answer. Your Answer: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_forwardEstimate the absolute standard deviation and the coefficient of variation for the results of the following calculations. Round each result to include only significant figures. The numbers in parentheses are absolute standard deviations. y = 1.09(+0.02) x 10-8-3.60(0.2) × 10-⁹ a. Absolute standard deviation = Coefficient of variation - Result = b. y = Absolute standard deviation = Coefficient of variation = Result = % 1.49(0.02) x 10-24.97(10.06) × 10-³ 27.1(0.7)+8.99 (+0.08) %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