Ages Number of students 15-18 4 19-22 5 23-26 6 27-30 7 31-34 4 35-38 10 Based on the frequency distribution above, find the cumulative frequency for the class with lower class limit 31Cumulative Frequency = Give your answer rounded to one decimal place

Question
Ages Number of students
15-18 4
19-22 5
23-26 6
27-30 7
31-34 4
35-38 10



Based on the frequency distribution above, find the cumulative frequency for the class with lower class limit 31

Cumulative Frequency = 

Give your answer rounded to one decimal place

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Statistics

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: During the second round of the 1989 U.S. Open golf tournament, four golfers scored a hole in one on ...

A: Poisson distribution:The probability mass function of Poisson distribution is as follows.

Q: Defective Pacemakers Among 8834 cases of heart pacemaker malfunctions, 504 were found to be caused b...

A: Here, the number of non-defective firmware is 8,330 (=8,834–504) , and there are three different pac...

Q: Redundancy Using Braun battery-powered alarm clocks, the author estimates that the probability of fa...

A: (a)An author estimates that the probability for Braun battery-powered alarm clocks failing on any gi...

Q: In Problems, a.identify the population and variable under consideration. b.use the technology of you...

A: Note:Hey there! Thank you for posting the question. However, since your question has more than 3 sub...

Q: Testing Claims About Proportions. In Exercises 9–32, test the given claim. Identify the null hypothe...

A: Null and alternative hypotheses:The null and alternative hypotheses are as follows:H0: p = 0.15H1: p...

Q: Comparing Gas Mileages. An experiment is to be conducted to compare four different brands of gasolin...

A: (a)Completely randomized design:The completely randomized design is a design in which, each of the e...

Q: You work for a local newspaper that recently reported on a bill that would make it easier to create ...

A: The hypotheses test,H0: p≤0.5H1: p>0.5The proportion of readers who oppose the bill is,

Q: This subject is in Social Stats explain frequency distribution, show explains

A: Frequency:The frequency of a particular data value is the number of times the data value occurs.Freq...

Q: Probability of a Run of Three Use a simulation approach to find the probability that when five conse...

A: Answers will vary. One of the possible answers is given below:Step-by-step software procedure to gen...

Q: Independent events Based on a Pitney Bowes survey, when 1009 consumers were asked if they are comfor...

A: 5% guideline for cumbersome calculations:When sampling is done without replacement and the sample si...

Q: A variable is normally distributed with mean 68 and standard deviation 10. Find the percentage of al...

A: a.So, From Standard Normal Table, area corresponding to 0.5 is 0.69146.

Q: Square Peg Sydney Smith wrote in “On the Conduct of the Understanding” that it is impossible to fit ...

A: If the occurrence of event is not possible, then the event is considered as an impossible event. Als...

Q: Have you ever tried to get out of jury duty? About 25% of those called will find an excuse (work, po...

A: a. The probability that all 12 will be available to serve on the jury:From the provided information,...

Q: Job Applicants The Society for Human Resource Management conducted a survey of 347 human resource pr...

A: (a)Here, the number of respondents or the human resource professionals are 347 and 73% reported that...

Q: Consider two normal distributions, one with mean -4 and standard deviation 3, and the other with mea...

A: a)FalseGiven two normal distributions with mean -4, standard deviation 3 and mean -4, standard devit...

Q: Precision is a measure of -?-?

A: Precision:In measurement of a set, accuracy refers to closeness of the measurements to a specific va...

Q: A and B are independent events such that P(A) = 0.3 and P(B) = 0.6. Find P(A&B).

A: Click to see the answer

Q: A variable is approximately normally distributed. If you draw a histogram of the distribution of the...

A: Justification:A variable is approximately normally distributed.If the variable is approximately norm...

Q: Notation of 0 + Using the same survey from Exercise 3, the probability of randomly selecting 30 of t...

A: Justification:A random sample of 30 consumers are selected from a population of 1,009 consumers and ...

Q: Sketch the curve corresponding to each of the following specic distribution shapes. a. Bell shapedb....

A: (a)Justification:Symmetric distribution:When the left and right sides of the distribution are approx...

Q: Precisely what is meant by the statement that a population is normally distributed?

A: Generally data comes from different sources might be biased towards a particular property. It could ...

Q: Geometric Distribution If a procedure meets all the conditions of a binomial distribution except tha...

A: Define a random variable x as the number of subjects who is a universal donor. The number of subject...

Q: What is the converse of p-->q

A: Click to see the answer

Q: Testing Claims About Proportions. In Exercises 9–32, test the given claim. Identify the null hypothe...

A: Denote x as the number of specified characteristics, the hypothesized proportion as p and the sample...

Q: Assume that 12 jurors are selected from a population in which 50​% of the people are​ Mexican-Americ...

A: Click to see the answer

Q: Tallest and Shortest Men The tallest living man at the time of this writing is Sultan Kosen, who has...

A: Given dataHeight of tallest living man Sultan Kosen = 251 cmHeight of shortest living man Chandra Ba...

Q: In each part, find the area under the standard normal curve that lies between the specied z-scores, ...

A: a)The area under the standard normal curve that lies between –1 and 1 represents the area to the rig...

Q: Four actions are to be performed in a definite order. There are three possibilities for the first ac...

A: As per the information given in the questionTotal no of actions = 4Action 1 – 3 possibilitiesAction ...

Q: 120 psychology students took a standardized test. The scores are summarized in the GFDT below.   ...

A: Frequency:The frequency of a particular data value is the number of times the data value occurs.Cumu...

Q: Sleep Notation Consider a sample of sleep times taken from the population of all adults living in Al...

A: Justification:The sample mean is to be obtained from the sample that is taken from the population an...

Q: How to find the sample variance and standard deviation.   22 11 5 8 9

A: The mean of the given numbers is obtained as follows:

Q: The mean height of men in the U.S. is 69.1 inches with a standard deviation of 2.9 inches. Assumetha...

A: It is given that the mean is 69.1 and standard deviation is 2.9.

Q: State the basic counting rule (BCR).

A: Basic counting Rule (BCR) states that if there are m ways of doing one thing and n ways of doing ano...

Q: Aquantitative data set has been grouped by using cutpoint grouping with equal-width classes. a. If t...

A: a.Cut-point grouping:A grouping method is similar to limit value grouping with the slight difference...

Q: Age-adjusted death rates are used to: Compare deaths in persons of the same age group Determine t...

A: Age-adjusted death rates can be defined as the death rate that helps in controlling the effects of d...

Q: Wi-Fi Based on a poll conducted through the e-edition of USA Today, 67% of Internet users are more c...

A: Preliminary calculation:67% of Internet users are more careful about personal information when using...

Q: For a qualitative data set, what is a a. frequency distribution?b. relative-frequency distribution?

A: Click to see the answer

Q: There are 80 questions from an SAT test, and they are all multiple choice with possible answers of a...

A: Define the random variable x as the number of correct answers. Here, the number of questions (n) is ...

Q: Incomes of College Students’ Parents. A researcher wants to estimate the average income of parents o...

A: Representative sample:A sample that reflects or represents all or most of the relevant characteristi...

Q: Powerball As of this writing, the Powerball lottery is run in 44 states. Winning the jackpot require...

A: The number of ways to selecting five numbers between 1 and 52 is,

Q: SAT Test. In Exercises 15–20, assume that random guesses are made for eight multiple choice question...

A: The probability that at least one answer is correct is,

Q: World Series. TheWorld Series in baseball is won by the first team to win four games (ignoring the 1...

A: a)The table represents the probability distribution of lengths of the World Series. The random varia...

Q: In Exercises 1–5, assume that 74% of randomly selected adults have a credit card (based on results f...

A: Define the random variable x as the number of adults having credit card. Here, the number of adults ...

Q: Statistics for social sciences  4.12. Find the z-values corresponding to the (a) 90th, (b) 95th, (c)...

A: (a) z-value corresponding to the 90th percentile of a normal distribution:From Standard normal table...

Q: Researchers have observed that high school students who watched educational television programs as y...

A: Observational study:If the individuals under the study are just observed and measured based on certa...

Q: Bacteria on a Petri Dish. A petri dish is a small, shallow dish of thin glass or plastic, used espec...

A: (a)The density curve of the variable is,

Q: Oregon Pick 4 In the Oregon Pick 4 lottery game, a bettor selects four numbers between 0 and 9 and a...

A: Justification:Permutations:There are n different items and r number of selections and the selections...

Q: Poisson: Deaths Currently, an average of 7 residents of the village of Westport (population 760) die...

A: (a)Define the random variable x as the number of deaths per year. Here, the average number of deaths...

Q: Busy Bank Tellers. The Prescott National Bank has six tellers available to serve customers. The data...

A: a)Single value grouping:A grouping method in which each class is used to represents a single possibl...