A local church parish wants to raise money to add to their campus. In a sample from a previous fund raising campaign, the parish found that of the 136 people in the sample they contacted, that 70 actually contributed money. Of those that contributed money, the average contribution was $832 with a standard deviation of $266. In the recent fundraising campaign, a sample of 93 people revealed that 53 have contributed money with an average contribution of $1,162 and a standard deviation of $322. When testing (at the 5% level of significance) whether the variance of the contributions has increased in the current campaign compared to the previous campaign, what is the test statistic? (please round your answer to 2 decimal places)

Q: Bigfoot Field Researchers Organization maintains a database of bigfoot/sasquatch sightings and…

A: From the given information we find the solution.

Q: a department store has daily mean sales of $28,372.72. The standard deviation of sales is $2000. On,…

A: The mean and standard deviation of daily sales is : x=$28372.72s=$2000 For Tuesday, the sales were…

Q: A local church parish wants to raise money to add to their campus. In a sample from a previous fund…

A:

Q: A car insurance company tells its prospective customers that they can save an average of at least…

A:

Q: A local church parish wants to raise money to add to their campus. In a sample from a previous fund…

A: The p-value of the test statistic is 0.143.

Q: In a certain​ city, the average​ 20- to​ 29-year old man is 69.4 inches​ tall, with a standard…

A:

Q: According to the U.S. Bureau of Labor and Statistics, realtors in Michigan make $65,330 on average.…

A: Answer: From the given data, Sample size (n) = 30 Sample mean (x⏜) = $ 70125 Population standard…

Q: Dougall compared the resting heart rate of average healthy citizens and soldiers suffering from…

A: Given that,Dougall compared the resting heart rate of average healthy citizens and soldiers…

Q: A local church parish wants to raise money to add to their campus. In a sample from a previous fund…

A: Given, -x1 = 893, n1 = 67, s1 = 282 -x2 = 1180, n2 = 49, s2 = 371 α = Level of significance = 0.05

Q: The former manager of the coffee shop in a local bookstore claimed that the mean daily sales were…

A: Givensample size(n)=11Mean(x)=2956.14standard deviation(s)=370α=0.01

Q: d) What percentage of women are TALLER than 5 feet 11 inches? Round to nearest tenth of a percent. %…

A: Given Information: Mean height of adult men = 69.8 inches The standard deviation of height of adult…

Q: Español Ojai is a weather station in the state of California and Duxbury is a weather station in the…

A: Dear student, If you find this solution helpful please upvote ? it.

Q: company has surveyed 40 customers who shop on a particular online commerce platform and the company…

A: Given that  Mean = 23 , Standard deviation = 14

Q: In designing a work desk, it is found that males have sitting knee heights with a mean of 21.2 in,…

A: From the provided information, Mean (µ) = 21.1 Standard deviation (σ) = 2.2

Q: The mean finish time for a yearly amateur auto race was 185.56 minutes with a standard deviation of…

A: z-score:The formula for finding the z-score is as follows:

Q: A group of friends, on average, had $300 in their wallets, with a standard deviation of $50.…

A: It is given that the mean and standard deviation are $300 and $50, respectively.

Q: Researchers wanted to know how the size of a bowl affects how much ice cream people tend to scoop…

A: Group 1 who was given a small bowl of ice cream Mean=6.2 SD=1.8, n1=15 Group 2 who was given a big…

Q: The Jimmy John’s store manager on Hwy. 46 wanted to know more about their customers.  She decides to…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: statewide, social workers average 10.2 years of experience. In a random sample, 203 social workers…

A: State the hypotheses.

Q: For a study conducted by the research department of a pharmaceutical company, 265 randomly selected…

A:

Q: According to the Bureau of Labor Statistics, the mean salary for registered nurses in Kentucky was…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: A local church parish wants to raise money to add to their campus. In a sample from a previous fund…

A: It can be interpreted from the given information that: For previous campaign:n1(contacted persons in…

Q: According to the Vivino website, suppose the mean price for a bottle of red wine that scores 4.0 or…

A: The number of sampled bottles, n=58.The hypothesized average price of the bottles with scores of 4.0…

Q: The Tampa Bay Area Chamber of Commerce wanted to know whether the mean weekly salary of nurses was…

A: given  n1=12, μ1=$827, s1=$22.8n2=8, μ1=$836, s2=$34.4

Q: A local church parish wants to raise money to add to their campus. In a sample from a previous fund…

A: Given, Sample from a previous fund raising campaign has n1=134X1=67x1=$893s1=$282 Sample proportion…

Q: In a certain town (A), a family’s mean weekly grocery spending is $450 with a standard deviation of…

A: The mean weekly grocery spending in town A = $450the standard deviation = $35 The z score for weekly…

Q: State the conclusion in the problem context.   We fail to reject H0. It is not reasonable to…

A:

Q: In a national survey, middle school students report spending 3.1 hours per week on homework. Mr.…

A: n=24, x¯=3.4, s=1.9

Q: As part of a study of corporate employees, the director of human resources for PNC Inc. wants to…

A: The provided information is as follows: A sample size of Cincinnati employees is .The mean is .The…

Q: In a certain town (A), a family’s mean weekly grocery spending is $350 with a standard deviation of…

A: Obtain the Z-score for the weekly groceries budget of $365 spent by town A.Consider the money spent…

Q: According to a money report by a government institution, 18-to-20-year-old college students have an…

A: Given that  n=40 X̄=546 S=67.25 μ=569

Q: Carlos and Devon both accepted new jobs at different companies. Carlos's starting salary is $36,000…

A: Carlos's starting salary is $36000Devon's starting salary is $33000Carlos's company offers…

Q: The Iowa Department of Transportation repaired hundreds of bridges in 1993. To check the average…

A: Step 1: List the given values. We are given the following: population mean cost to repair a bridge,…

Q: aking the family to an amusement park has become ncreasingly costly according to the industry…

A: We have given that,  Sample mean (x̄) = $ 232, sample standard deviation (s) = 42 and sample size…

Q: A local church parish wants to raise money to add to their campus. In a sample from a previous fund…

A:

Q: Eddie Clauer sells a wide variety of outdoor equipment and clothing. The company sells both through…

A: The 90% confidence of the diffeence of population mean [$-37.156 , $0.756] #Rounded to 3 decimal…

Q: Three high school basketball teams measured the heights of all of their basketball players: The…

A: From the provided information, Derby Dragons have a mean height of 72.0 inches that is (µ1) = 72.0…

Q: The mean finish time for a yearly amateur auto race was 187.08 minutes with a standard deviation of…

A:

Q: local church parish wants to raise money to add to their campus. In a sample from a previous fund…

A: Formula : Test statistic

Q: A local church parish wants to raise money to add to their campus. In a sample from a previous fund…

A:

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.