Prison Time According to a public service website, 68.2%of white collar criminals get prison time. A randomly selected sample of 161white collar criminals revealed that 122 were serving or had served prison time. Using α=0.10, test the conjecture that the proportion of white collar criminals serving prison time differs from 68.2% using a hypothesis test and a confidence interval. Compute the test value. Always round z score values to two decimal places.

Q: How many more Tweets are students at Hempstead High School sending in 2017 than in 2012? The table…

A: If an interval is proposed as an estimate of the unknown parameter, then it is interval estimation.…

Q: A poll of 827 students at Alpha State College found that 61% of those polled preferred a quarter…

A: Given that Sample size n = 827 Sample proportion of students who prefer a quarter system = 0.61 The…

Q: You measure 43 randomly selected textbooks' weights, and find they have a mean weight of 71 ounces.…

A: Given : Sample Size (n) = 43 Sample Mean x¯ = 71 Standard Deviation (σ) = 12.1 Confidence Level =…

Q: You measure 35 randomly selected textbooks' weights, and find they have a mean weight of 63 ounces.…

A:

Q: In a survey of 3700 TV viewers, 834 said they watch network news programs. Find the margin of error…

A: Solution

Q: A sample of 200 found that 43.2% of those sampled consumed more than 2 alcoholic  beverages  a week.…

A: Given:

Q: oduct of two numbers is 20 the quotient of the two numbers is 5    what are the two numbers?

A: Let, x and y be the two numbers, the product of two numbers = x*y = 20 the quotient of the two…

Q: Out of 240 sample students surveyed, 187 students are planning to take classes during the…

A: We have given that the sample size n=240 and favourable cases X=187. Sample proportion p^ = X/n.

Q: A recent study states that 45 percent of Americans fear public speaking. A student believes that…

A:

Q: To estimate the proportion of smoker a sample of 100 men was selected. In the selected sample, 40…

A:

Q: A random sample of 320 medical doctors showed that 162 had a solo practice. Let p represent the…

A: Given,

Q: A poll of 827 students at Alpha state college found that 61% of those polled preferred a quarter…

A: It is given that the proportion of the students who preferred a quarter system to a trimester…

Q: A local health centre noted that in a sample of 400 patients, 80 were referred ta hospital. a.…

A: Given, n = 400            x = 80 Therefore, population proportion p^ = 80400 = 0.2 The critical…

Q: You measure 43 randomly selected textbooks' weights, and find they have a mean weight of 33 ounces.…

A: We have to find 95% confidence interval for the true population mean textbook weight.

Q: Google is studying the quality of results returned by an upgraded version of its search engine.…

A: From the given information, it can be observed that x = 23 and n =100.

Q: You measure 43 randomly selected textbooks' weights, and find they have a mean weight of 40 ounces.…

A: It is given that the sample mean is 40 and the population standard deviation is 14.7.

Q: A random sample of high school students is used to estimate the mean time all high school students…

A: Solution: From the given information, a 99% confidence interval is 1.7 hours to 3.1 hours.

Q: You measure 37 randomly selected textbooks' weights, and find they have a mean weight of 63 ounces.…

A: Formula :

Q: Researchers claimed that women exercise at the same proportion as men do. To test this claim, a…

A: For the given data Perform Z test for two proportions

Q: A very wise teacher measured brain activity in all 20 seniors in his Statistics class in the first…

A: We have to find p value for given testing.

Q: Construct the 90% confidence interval for the difference p1-p2 when x1=45, n1=85, x2=20, and n2=65.…

A: Given Information: x1=45n1=85x2=20n2=65c=90%=0.90

Q: You measure 36 randomly selected textbooks' weights, and find they have a mean weight of 33 ounces.…

A: Given that the population standard deviation is 2.3 , so we use Z Statistic.

Q: You measure 22 backpacks' weights, and find they have a mean weight of 39 ounces. Assume the…

A: The independent variable is backpacks' weight. The sample size is 22. The sample mean is 39 ounces.…

Q: You measure 25 randomly selected textbooks' weights, and find they have a mean weight of 42 ounces.…

A:

Q: в, — 42, s — 8.8, SS,, — 64, п — 19 90% : < B1< 99% : < B1 S

A: Given   beta cap1 =42, s=8.8, SS xx =64 , n = 19

Q: You measure 37 randomly selected textbooks' weights, and find they have a mean weight of 53 ounces.…

A:

Q: You measure 28 randomly selected textbooks' weights, and find they have a mean weight of 59 ounces.…

A: Given data, n=28 x=59 σ=8.9z-value at 99% confidence is Zc=2.576

Q: Suppose that a random sample of 128 graduate-admissions personnel was asked what role scores on…

A: From the provided information, Sample size (n) = 128 From which 70 answered "very important". Sample…

Q: You measure 42 randomly selected textbooks' weights, and find they have a mean weight of 41 ounces.…

A: Given problem Given that   x̄ = 41 σ = 4.4 N = 42 As we know, P( -1.96 &lt; z &lt; 1.96 ) = 0.95…

Q: Construct a 95% confidence interval for u,-2. Two samples are randomly selected from each…

A: Given that, n1=40, x1¯=12, s1=2.5 n2=35, x2¯=13, s2=2.8

Q: In a science fair​ project, Emily conducted an experiment in which she tested professional touch…

A: Given data, n=330 x=155 sample proportion p=x/n =155/330=0.47   z-value at 95% confidence is zc=1.96

Q: You measure 34 randomly selected textbooks' weights, and find they have a mean weight of 73 ounces.…

A:

Q: Assume the population standard deviation is 8.5 ounces. Based on this, construct a 99% confidence…

A:

Q: A sociologist develops a test to measure attitudes towards public transportation, and 37 randomly…

A: given that,sample mean, x =58.5standard deviation, s =19.7sample size, n =37standard error = sd/…

Q: A sample of freshman takes a reading comprehension test and their scores are summarized below.…

A:

Q: A recent study of over 1000 parents on cyberbullying showed that a 95% confidence interval of…

A: From the given information, 95% confidence interval of proportion of kids who faced bullying in…

Q: You measure 23 randomly selected textbooks' weights, and find they have a mean weight of 37 ounces.…

A:

Q: A 90% confidence interval for the difference between the proportion of college students who use…

A:

Q: ou measure 32 backpacks' weights, and find they have a mean weight of 79 ounces. Assume the…

A: Solution: Given information: n= 32 Sample size  x= 79 ounces Sample mean σ=10.2 ounces Population…

Q: A Gallup poll of 1487 adults showed that 43% of the respondents have Facebook pages.  Construct a…

A: Confidence Interval: In statistics, we can say a range of values of the specified population…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.