The average charitable contribution itemized per income tax return in a certain state is $792. Suppose that the distribution of contributions is normal with a standard deviation of $103. Find the limits for the middle 68% of contributions. Round z-value calculations and final answers to 2 decimal places. The lower and upper limits for the middle 68% of contributions are respectively $ —- and $—-

Q: Gabriel and Lucia took a road trip across the country. The room costs, in dollars, for their…

A: According to the given information, we have Data set: "…

Q: What is the difference between finding the Mean and Range?

A: Introduction:The mean is a measure of central tendency, whereas the range is a measure of…

Q: Find the mean, 80th percentile and standard deviation: 2,-3,7,5,-2,3

A: Solution-: Given data: 2,-3,7,5,-2,3 We want to find, (a) The mean=? (b) The 80th percentile=? (c)…

Q: In 2009-2012, the value of precious metals changed rapidly. The data in the accompanying table…

A: The geometric mean is the average of a group of products' values.Geometric mean is defined as “…the…

Q: A set of 100 values has a median value of 40. What is the value of the 75th percentile in this set…

A: Introduction: Percentiles are used in statistics to divide a set of numerical values into 100 equal…

Q: Take 50 observations at random ranged from (117- 254). Make a grouped frequency distribution. Find…

A: We draw a 50 random numbers between 117 to 254 using command #RANDBETWEEN() in excel. 195 158…

Q: tests, a term paper, and a final examination. Each test counts as 15% of the course grade. The term…

A:

Q: Country A Country B Country C Country D Country E Trade Deficits (in billions of dollars) Country L…

A: Values in ascending order: 11.1, 13.2, 15.7, 16.2, 26.5, 26.7, 27.1, 29.1, 33.0, 33.0, 40.7, 43.7,…

Q: Illustration 10.7. Compute the standard deviation by the short method for the following data: 11,…

A: Data given  11,12,13,14,15,16,17,18,19,20,21

Q: a. Compute the geometric mean rate of return per year for platinum, gold, and silver from 2009…

A: (a)we know the formula for  geometric rate of returns is,The geometric mean rate of return per year…

Q: What's the median of 10.2,12.6,20.4, and 13.6 to 3 decimal places

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

Q: alculate the median of the data shown, to two decimal places, 24.4,11.1,2.1,29,8.7,6.9,6.6,1.1

A: The given data is 24.4,11.1,2.1,29,8.7,6.9,6.6,1.1

Q: The mean of the following data is 70. Find x:  47,56,x,79,86

A:

Q: Find the z-score that cuts off 65% in the body on the left.

A:

Q: The lowest mark scored for a certain examination in a statistics class is 11. If the midrange of the…

A: Given that Minimum = 11 Midrange = 29

Q: Determine whether the statement is true or false. If it is false, rewrite it as a true statement. In…

A:

Q: A cardiologist wants to determine whether there is a change in blood pressure when her patients are…

A: Given : n=45 , x(sample mean of the differences ) = -2 mmHg ,  s(sample standard deviation) = 0.4…

Q: what range of raw scores makes up the middle 40%

A: The middle 40% means, the scores lie between 30th and 70th percentile. From stand normal, z-score…

Q: Illustration 10.4. Compute the standard deviation for following data: 11. 12. 13. 14, 15, 16, 17,…

A:

Q: The probability of drawing a red face card from a deck of cards.   Leave your answer as a percent to…

A:

Q: While doing an experiment, a physics student recorded the following sequence of elapsed times (in…

A: The old data is  2.08 21.8 2.83 2.15 2.64 2.32 2.25 The new data is as follows,…

Q: Suppose X ∼N (-4,1. Between what xx values does 99.72% of the data lie?

A: Given: X ∼N (-4,1 ) To find: Between what xx values does 99.72% of the data lie?

Q: A professor grades students on four tests, a term paper, and a final examination. Each test counts…

A:

Q: A professor grades students on three tests, four quizzes, and a final examination. Each test counts…

A: It is given that Sara has test scores of 95, 70, and 86, quiz scores are 91, 66, 76, 85 and her…

Q: For 120 consecutive days, a process engineer has measured the temperature of champagne bottles as…

A: Given, that the process engineer measured the temperature of champagne bottles for  consecutive…

Q: The Coffee shop's mean sales are $2000 a day, with a standard deviation of $1000. what're the…

A: GivenMean(μ)=2000standard deviation(σ)=1000

Q: Your statistics teacher splurges on five comic books, spending $1230, $70, $540, $610, and $1600 on…

A: Given 1230 70 540 610 1600

Q: Approximately​ 95% of the observations fall within the interval

A: We have given that Mean(x̅) = 79.6 and Standard deviation (s) = 13.9

Q: 0.25 inches. About 95% of the distribution lies between what two values?

A:

Q: C2. GSS 2014 and GSS 2018 respondents were asked their opinion on whether homosexuals should have…

A: Given information: GSS 2014 and GSS 2018 respondents were asked their opinion on whether…

Q: The distances golf balls travel under laboratory testing conditions are normally distributed. The…

A:

Q: the mean and standard deviation for each group of numbers. Round answers to the hundredths place if…

A: Explanation and solutions is given below....

Q: A market researcher at a major clothing company that has traditionally relied on catalog​ mail-order…

A: Introduction :-  We have to explain in this context what the 7% represents in the given context.

Q: what z value correlates to 98.96% under  the curve

A: If Z represents standard normal distribution, then we need to find the value z such that…

Q: Find the mean and standard deviation of the filling numbers:  30,25,10,30,45,60,30,25,20

A: Mean of the filling numbers is Mean=sum of the all numbers /no  of  given observation Mean…

Q: the value of so that 92.3% of the data lies to the right of

A:

Q: The data in the accompanying table represent the total rates of return (in percentages) for three…

A: The data table for the total rate of…