A local town wants to determine the expected tax revenue it would collect through property taxes. It took a sample of 50 properties, and the sample yielded the following statistics regarding the property values: mean = $212,345 and st.dev = $16,280. Estimate the average property value using 95 % confidence interval. Give an expected range of total tax revenue with 95% confidence if the taxes were 2% of the property value and if there were 1,000 properties in the town.

Q: You wanted to know how long on average a business student at your university studies per night. You…

A: Given data is 2,1,3,2,4,1,0,3,2,4sample size(n)=10

Q: Use the appropriate statistical tables.  A recent survey showed that from a sample of 500 packages…

A: Given, A recent survey showed that from a sample of 500 packages delivered by a Postal Service, 480…

Q: Sergio is doing a long hike and is carefully calculating his pack weight. An energy bar has mean…

A: An energy bar has mean weight 1.75 ounces An energy bar has standard deviation 0.019. A juice box…

Q: What percent of cans will have a caffeine content greater than 35 mg?

A: Let X be the random variable of the caffeine content of a cola.Given that,Population mean

Q: If you have 100 people in your sample, what would be the degrees of freedom you use to calculate the…

A: Given, n=100 Degree of freedom(df)=?

Q: A set of n = 6 scores has a mean of M = 10. Another set of scores has n = 4 and M = 20. If these two…

A: Given, First set has mean = 10 and n =6 Second set has mean = 20 and n =4

Q: McDonald’s advertises that its ice cream cones have a mean weight of 3.2 ounces.  A human server…

A:

Q: This looks like another problem. Read carefully. Sergio is doing a long hike and is carefully…

A:

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: You are told that a survey produced a 90% confidence interval for the mean spent on utilities per…

A:

Q: The Coca-Cola Company reported that the mean per capita annual sales of its beverages in the United…

A: Mean(x)=460.4 standard deviation(s)=101.9 sample size(n)=36

Q: Researchers examined the influence of a television program on children's aggressiveness. The number…

A: Since we only answer up to 3 sub-parts, I'll answer the 1st 3 sub-parts. Please resubmit the…

Q: Three potential employees took an aptitude test. Each person took a different version of the test.…

A: The z-score will be used to answer the given question. The formula for the z-score is z=x-μσ that…

Q: If you have a 99% confidence that a population proportion is in the interval from a to b, what does…

A:

Q: If n = 330 and X = 264, construct a 95% confidence interval for the population proportion, p.

A: Ans#- From the provided information, Confidence level = 95% Sample size (n) = 330, x = 264 Sample…

Q: On a nationwide math test, the mean was 72 and the standard deviation was 7. If Roberto scored 70,…

A: Given that,Mean = 72Standard deviation = 7And X=70

Q: The mean earning of men in Florida differs significantly from the mean earning of men in Texas. If…

A: Sample sizesn1 is 123 and n2 is 88.

Q: The Computer Anxiety Rating Scale (CARS) measures an individual’s level of computer anxiety, on a…

A: From the sample information, it is interpreted that: For males: The sample standard deviation,…

Q: Use the sample mean(78.5)and sample standard deviation (12.3671)in your calculations below. Use…

A: Given information:

Q: The mean GPA for 138 residents of the local apartment complex is 1.9. What is the best point…

A: Solution: From the given information, the mean GPA for 138 residents of the local apartment complex…

Q: Emma wants to estimate the percentage of people who use public transportation in a city. She surveys…

A: Obtain the margin of error. The margin of error is obtained below: The formula for the margin of…

Q: Researchers examined the influence of a television program on children's aggressiveness. The number…

A: (since it is nit mention which question so as per our protocol we shall answer only the first three…

Q: Sergio is doing a long hike and is carefully calculating his pack weight. An energy bar has mean…

A: Given that an energy bar has mean weight 2.28 ounces and standard deviation 0.061. A juice box has…

Q: How large is the sample if the confidence level is 97%, Ɛ = 2.5%  and ρ = .35?

A:

Q: Nationally, patients who go to the emergency room wait an average of 4 hours to be admitted into the…

A: Solution: Let X be the waiting time. From the given information, x-bar = 2.7 hours, S=2.8 hours and…

Q: You plan to conduct a survey to estimate the percentage of adults who have had chickenpox. Find the…

A: It is needed to find the number of people who must be surveyed if one wants to be 93% confident that…

Q: 2. Consider the familial aggregation of cholesterol levels. Suppose cholesterol levels are assessed…

A: To test for the equality of the mean cholesterol levels of the two groups using R, we can perform an…

Q: In a city with three high schools, all the ninth graders took a Standardized Test, with these…

A: We have given that the mean score of test of all the ninth graders from the three school's of the…

Q: The recidivism rate for convicted sex offenders is 8%. A warden suspects that this percent is…

A: Given,n=321x=22p^=xnp^=22321=0.0685α=0.01

Q: You have been hired by a consortium of local car dealers to conduct a survey about the purchases of…

A: Given: Confidence level = 95% Margin of error = 0.03 Formula Used: n = ZαMargin of error2 p(1-p)

Q: Suppose that the mean score of a class of 34 students was 78. The 19 male students in the class had…

A: Basic formulas for mean has applied.

Q: Find the sample size required to estimate the percentage of statistics students who take their…

A:

Q: f n=300 and x=60, construct a 99% confidence interval estimate for the population proportion.

A: n=300 and x=60, construct a 99% confidence interval

Q: Angela is trying to figure out the sample size for the data set she wants to collect. She is…

A: The larger the sample size, the less will be the value of standard error. Therefore, the range of…

Q: In a city with three high schools, all the ninth graders took a Standardized Test, with these…

A: Given:  The number of students and mean scores for the three schools are:                  School 1…

Q: If the mean of a data set is 22 and the SD is 5, what % of the values fall between 12 and 27? Give a…

A: given that  mean of a data set is 22

Q: Suppose you plan to conduct among 2,500 Grade 12 students enrolled in the stem Track. How many…

A:

Q: Suppose we measure GPA for people in our class, we find the mean is 2.8 and the median is 3.2. What…

A: Given: Mean = 2.8 Median = 3.2

Q: A consumer research group purchased identical items in eight drugstores. The mean cost for the…

A: Here we need to find the median using the emperical relationship.

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.