Question

In a recent survey at a small Midwestern college, 39 of 140 randomly selected students revealed that they had committed plagiarism at least one time during their college career.  Find the 90% confidence interval of the true population proportion of students (at this small Midwestern college) who have committed plagiarism at least once during their college career.

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

Other

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: a clinical trial tests a method designed to increase the probability of conceiving a girl. In the st...

A: Given: Number of babies born (n)=360 Number of girl babies (x) = 306 Level of confidence = 0.99

Q: The length of a fully grown hibiscus plant has a mean 35cm. It is found that 5% of these plants are ...

A: (i) Obtain the value of the standard deviation. The value of the standard deviation is obtained belo...

Q: Suppose 243 subjects are treated with a drug that is used to treat pain and 50 of them developed nau...

A: Given, The number of subjects treated with a drug that is used to treat pain is n=243 The number of ...

Q: If the random variable X is uniformly distributed between 40 and 50, then P(35≤X≤45) is?

A: The density function is given by: f(x) =1/(50-40)        = 1/10

Q: Identify the type of sampling technique in the situations described below: The name of each contesta...

A: 1. Simple Random Sampling Technique: This is a simple random sampling technique as each contestant h...

Q: 11.6.35    Question Help     The mathematics department of a college has 14 male​ professors...

A: The mathematics department of a college has 14 male​ professors 14 female​ professors 6 male teachin...

Q: IQ scores are normally distributed with a mean of 100 and standard deviation of 15. Findthe probabil...

A: IQ scores are normally distributed. Mean = 100 Standard deviation = 15

Q: The following sample data are from a normal population:    Sample size (n) = 25, Sample mean=14, Sam...

A: Given Information: Sample size (n) = 25 Sample mean (x ) = 14 Sample standard deviation (s) = 3.6 Co...

Q: 1. A club has 120 members, 30 of whom are lawyers and 20 of whom are liars. A total of 80 members ar...

A: From the given information, there are 120 members, 30 of whom are lawyers and 20 of whom are liars. ...

Q: Assume a population of 1​, 3​, and 8. Assume that samples of size n=2 are randomly selected with rep...

A: Given Values, Population: 1, 3, 8 N = 3 Calculate the population mean Calculate the population stan...

Q: A developmental psychologist is examining the development of language skills from age 2 to age 4. Th...

A: Given : Total number of groups, k = 3 with 18 children in each group, Total children = 18×3 = 54 SS ...

Q: 11.6.33    Question Help     It is equally probable that the pointer on the spinner show...

A: Probability denotes the chances of occurring an event. It lies between zero and 1. Here it is given ...

Q: Not sure what went wrong? Thank you!

A: It is given that the level of significance is 0.001.

Q: Intelligent quotient (IQ) scores form a normal distribution with µ = 100 and σ = 15. Individuals wit...

A: Let "X" be the IQ score.

Q: Can anyone help me with this problem

A: Let us denote A= a puppy gets adopted  B= lives 7 years or older given that  P(A)=65%=0.65 P( B | A'...

Q: The 10th percentile implies that the probability is 0.1. P[X−μσ<x−30030]=0.1P[Z<x−30030]=0.1⇒x...

A: Since 10th percentile means 0.1, find the value from the table which is very close to 0.1. According...

Q: 11.6.85         Of the 40 plays attributed to a​ playwright, 13 are​ comedies, 17 are​ trage...

A: Click to see the answer

Q: A random sample of 50 binomial trials resulted in 20 successes. Test the claim that the population p...

A: It is given that, Number of trials (n)=50 Number of success(f)=20 we have to test the claim that the...

Q: A psychologist is investigating whether or not elderly people (age 60 to 70) have a different speaki...

A: Here it is given that , a psychologist is investigating whether or not elderly people (age 60 to 70)...

Q: Assume the geometric mean of 6 profit growth ratios of a company is 1.2. What is the product of thos...

A: Consider a set of numbers x1, x2, …, xn of size n.

Q: Notation Ро N Titles a. population standard deviation b. population mean c. sample proportion d. the...

A: Titles and notation: a) Population standard deviation=σ b) Population mean=µ c) Sample proportion= p...

Q: The failure rate for taking the bar exam in Philadelphia is 41%.  If 375 people take the bar exam, w...

A: Given that, The failure rate for taking the bar exam in Philadelphia is 41%  i.e. probability, p = 0...

Q: The probability that z lies between -2.41 and 0

A: Click to see the answer

Q: Assuming there are 150 students in our statistics class, 20 of you have received 4 hours of study st...

A: Given Data: Sample mean=75 Population mean=72 Population standard deviation=6 n=20   For one sample ...

Q: given that the random variable X is normally distributed with a mean of 80 and a standard deviation ...

A: Given: Meanμ=80Standard Deviationσ=10

Q: The 2019 Annual report also reported the age of 8 Executive Officers:   It is known that these 8 e...

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case yo...

Q: Show all your work for full credit:  You can answer the question in the box or upload a picture usin...

A: According to the scenario, A1: Positive test results  A2: Negative Test results B1: Has the disease ...

Q: Assume that when adults with smartphones are randomly​ selected, 51​% use them in meetings or classe...

A: Click to see the answer

Q: A boat capsized and sank in a lake. Based on an assumption of a mean weight of 142 ​lb, the boat was...

A: Consider a random variable X that defines the weights of the people. According to the given informat...

Q: Consider babies born in the "normal" range of 37–43 weeks gestational age. A paper suggests that a n...

A: d) It is given that the birth weights are normally distributed with mean μ=3,500 grams and standard ...

Q: There is popular belief that herbal remedies such as Ginkgo Biloba and Ginseng may improve learning ...

A:  Based on the null hypothesis the herb has no effect on memory scores.H0: μ = 80 (even with the herb...

Q: what is the statistical level of measurement of systolic blood pressure, diastolic blood pressure?

A: Given the variables, systolic blood pressure, diastolic blood pressure

Q: Confidence Interval for One Population Proportion In the article "Explaining an Unusual Allergy," ap...

A: Click to see the answer

Q: Assume the expected value of a binomial experiment is 4.8 and the probability (p) of success event i...

A: Click to see the answer

Q: A law enforcement agent believes that more than 88% of the drivers stopped on Saturday nights for sp...

A: 1. The hypothesis can be written as H0: p0=0.88H1:p0>0.88 2. We can assume the level of significa...

Q: CONFIDENCE INTERVALS FOR THE DIFFERENCE IN 2 POPULATION PROPORTIONS Pharmaceutical scientists tested...

A: A confidence interval provides an interval for the estimate of the population parameter. p1 be the p...

Q: 11.6.81           Of the 47plays attributed to a​ playwright, 12 are​ comedies, 18 are​ trag...

A: Here it is given that -  Of the 47plays attributed to a​ playwright, 12 are​ comedies, 18 are​ trage...

Q: A stick of unit length is broken into two pieces. Find the expected ratio of the length of the longe...

A: Click to see the answer

Q: 11.6.85    Question Help     Of the 40 plays attributed to a​ playwright, 13 are​ comedies, ...

A: Probability denotes the chances of occurring an event. It lies between 0 and 1. Here it is given tha...

Q: To assess the accuracy of a laboratory scale, a standard weight that is known to weigh 1 gram is rep...

A: Click to see the answer

Q: A motoryde dives from Buenda to Quapo and back using the same course everyday. There are four stoplg...

A: Note: Hi there! Thank you for posting the question. As there are multiple sub parts, according to ou...

Q: Confidence Interval for One Population Mean In 1903, a paper published by Abigail Camp Dimon, discus...

A: Click to see the answer

Q: Suppose a professor uses a normal distribution to assign grades in her math class. She assigns an A...

A: Given: z score Grade >1.8 A <-2.2 F 1.1 < z<1.8 B -2.2 < z< -0.8 D

Q: 11.6.65           A die is tossed. Find the odds against rolling a number greater than 1. T...

A: The odds against of event A is, (1 - P(A))/P(A).

Q: The number of cartoons watched by Mrs. Kelly's first grade class on Saturday morning is shown below....

A: The number of cartoons watched by Mrs. Kelly's first grade class on Saturday morning is shown below....

Q: when samples of size 25 are collected from a normal population that has a mean of 100 and a standard...

A: The sample standard deviation (s) is equal to the ratio of standard deviation of the population σ an...

Q: Suppose 218 subjects are treated with a drug that is used to treat pain and 54 of them developed nau...

A: From the given information, the required hypothesis will be given by as follows: H0:p=0.20H1:p≠0.20p...