An environmental journal discussing current water usage within the US reports a 95% confidence interval of (82 , 88) for the average number of household gallons used per person per day. The study was based on a random sample of 30 individuals throughout the nation. Determine the margin of error for the confidence interval.

Q: A tire company wants to determine if tires made with a new type of tread will last longer than tires…

A: A tire company :  Two types of threads :  1 : new type of thread 2 : orginal type of thread Now ,…

Q: 48! a!44! 12. Ealuate .

A: To evaluate the given  (48!)/(2!*44!)

Q: . A shipment of 50 calculators contains 3 that are defective. In how many ways can an inspector…

A: we have to find number  of ways..

Q: 4. Suppose U = {1, 2, 3, 4, 5, 6, 7, 8, 9}, A = {3, 4, 5, 6, 7}, B = {all multiples of 3} and C =…

A: U=1,2,3,4,5,6,7,8,9A=3,4,5,6,7B=all multiples of 3C=all multiples of 2

Q: Assume a club N with six members: N = {Andy, Bill, Cathy, David, Evelyn, Erik} Count the different…

A: Finding the number of elements in a set or the total number of possible outcomes in an event is…

Q: In a survey of 251 professional athletes, it was found that 125 of them owned a convertible, 99 of…

A: Let us denote C=convertible, T=giant screen TV, S=sporting good storeGiven that:n(C)=125, n(T)=99,…

Q: 134

A:

Q: You have an Amazon box delivered that contains 7 blue, 6 yellow, and 2 green marbles. You randomly…

A: In the given problem amazon contains 7 blue marbles, 6 yellow marbles and 2 green marbles. Total…

Q: Suppose there were 500 nurses graduating this year. Assume that 400 were registered nurses (RN), and…

A: Let RN be the registered nurses, and H be the nurses who plan to work in hospital. From the…

Q: Assume that there are 105 students: 45 of which like rock, 52 of which like country, and 23 of which…

A:

Q: Suppose that a candy shop sells eight different kinds of candies: 50 cherry, 50 strawberry, 40…

A: Given that,  8 different type of candies. 50 cherry, 50 stawberry ,40 orange, 70 lemon, 30…

Q: A survey of 1,152 tourists visiting Orlando was taken. Of those surveyed: 274 tourists had visited…

A: The number of tourist visited any of these three theme parks is calculated as follows:

Q: Let A = {a, b, c}, B = {1,2, 3} How many elements are in A × B? Determine A × B

A:

Q: At a used-book sale, 92 books are adult books and 145 are children's books. Of the adult books, 60…

A: Given No. of adult books = 92 No. of children's books = 145   Of the adult books 60 are nonfiction…

Q: 3 A recent survey concluded that of the teachers in a certain school district had at least 10 years…

A: