QUESTION 17 The local Chamber of Commerce would like to estimate the hourly wage for union workers in Bucks County, Pennsylvania with a margin of error of +-$1.40. Assume standard deviation for wages is $8.50. With a sample size of 45, how much confidence can we have in our results? Write your answer in percentage terms with two decimals.

Q: n this scenario, what is the test statistic? A linguist believes the average age children learn a…

A: Given: n= 21.0 ,x̄= 9.2 ,s= 2.5 µ= 10.0 ,degree of freedom= 20.0

Q: One-Sample Statistics Std. Deviation Std. Error Mean Mean hrs1 NUMBER OF HOURS WORKED LAST WEEK 895…

A: From the given output, it is clear that t test had been done. 1. The test done was One sample t test…

Q: 20. Find the mean and standard deviation of the following data:

A: Class Frequency 1 - 5 2 6 - 10 5 11 - 15 2 16 - 20 1

Q: Please explain how to do these questions.  Using this data set attached:  1. Consider the…

A: 1. Two surveys are made for 12-month proportion high risk drinking, between men and women , in  a.…

Q: You are are running some stats on final game scores during March Madness games. The 16 teams that…

A: given data μ = 70.8σ = 12.4x = 80z = ?

Q: With your sample of 25 inmates, you want to test if the population mean age is different from 40 at…

A: for more information ping me    happy learning

Q: [1] The lengths of all hullback trout are normally distributed: N(16 inches, 3.6 inches), means that…

A: The lengths of hullback trout are normally distributed with mean  inches and the standard deviation…

Q: It takes an average of 8.7 minutes for blood to begin clotting after an injury. An EMT wants to see…

A:

Q: . There is some reason to believe that the mean normal adult body temperature is not 98.6 degrees…

A: We want to test whether the mean normal adult body temperature is 98.6 F or not. Let μ denotes the…

Q: QUESTION 9 You hypothesize that drinking tea reduces stress levels so you design a study comparing…

A: given data do not drink tean1 = 21x¯1 = 76s1 = 25drink tea : n2 = 26x¯2 = 62s2 = 13

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 120…

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

Q: An engineer wishes to determine the width of a particular electronic component. If she knows that…

A:

Q: QUESTION 7 You hypothesize that drinking tea reduces stress levels so you design a study comparing…

A: given data do not drink tean1 = 21x¯1= 76s1 = 25drink tea : n2 = 26x¯2= 62s2 = 13

Q: 50 years and a standard deviation of 10. Present this using empirical rule if it is a symmetrical…

A: Let X be the random variable the age of golfers in the club. Given that, X ~ N(μ=50 years, σ=10) To…

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 122…

A: It is an important part of statistics. It is widely used.

Q: Assuming that the heights of college women are normally distributed with mean 64 inches and standard…

A: Heights of college women are normally distributed :  Mean = 64  Standard deviation = 1.5  Percentage…

Q: In order to estimate the average time spent on an exam at a local university, data were collected…

A:

Q: Test scores: Scores on a statistics exam had a mean of 84 with a standard deviation of 13. Scores on…

A:

Q: Consider a test of coordination that has a normal distribution, a mean of 50, and a standard…

A: given data   normal distribution   μ = 50σ = 5

Q: Calculate the requested statistics for the given test scores (round to 2 decimals if necessary).…

A: For the given data Find mean =? median =? mode =? Range =? Standard deviation =? variance =?

Q: The average starting salary of students who graduated from colleges of Business in 2009 was $48,400.…

A:

Q: 3) Suppose we double each score. What is the range, mean, variance, and standard deviation?

A: It is required to calculate the range, mean, variance, and standard deviation, when each score is…

Q: QUESTION 1 The duration of time from first exposure to HIV infection to AIDS diagnosis is called the…

A: X¯=∑i=1nXinS2=∑(Xi-X¯)2i=1nn-1Median=(n+12)th               (when n=odd)

Q: A variable is normally distributed with mean 39 and standard deviation 10. Use the Cumulative…

A: Note: As per the guidelines, we are only allowed to solve first three subparts. (a) Given: X=15 μ=39…

Q: Week 3 Please provide solutions and steps in an excel spreadsheet Diastolic Blood pressure are…

A: Let X be the diastolic blood pressure. X follows normal distribution with mean of 85 and standard…

Q: The ages of the patients of a pediatrician were surveyed, summarize and displayed in the…

A: Given that, The ages of the patients of a pediatrician were surveyed, summarize and displayed in the…

Q: person would need to be in each of the following top percentages. (a) 3% (b) 9%

A: It is given that  Mean, μ = 100 Standard deviation, σ = 11

Q: Question 20 only, please

A: Solution: It is given that data on the ages of U.S. presidents and ages for a sample of high school…

Q: A student studying statistics wants to look at data for his favorite sport, American football. He…

A: It is given that that a student collect data on the lengths of 100 field goals from various games…

Q: Recently, a random sample of 25-34 year olds was asked, "How much do you currently have in savings,…

A: Class  frequency (f) Mid vaue (x) f.x f.x2 0-199 342 99.5 34029 3385885.5 200-399 86 299.5 25757…

Q: Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 68…

A: Given : x¯=68s=4 The Empirical Rule states that 99.7% of data observed following a normal…