A student wants to compare textbook prices for two online bookstores. She takes a random sample of five textbook titles from a list provided by her college bookstore, and then she determines the prices of those textbooks at each of the two websites. The prices of the five textbooks selected are listed below in the same order for each online bookstore. com: $115, $43, $99, $80, $119
com: $110, $40, $99, $69, $109
Are these independent or dependent samples?
Dependent. Different textbooks are being compared.
Dependent. The same textbooks are being compared.
Independent. Different textbooks are being compared.
Independent. The same textbooks are being compared.
To construct a confidence interval, the data must be checked for outliers. (Is it reasonable to assume that the data came from a normal population?) Which variable should be checked?
the prices of textbooks from B. com
the difference between the average textbook price for A. com and the average textbook price for B. com
the difference between the textbook price from A. com and the textbook price from B. com for each textbook,
the prices of textbooks from A. com
Find a 96% confidence interval for the mean difference in textbook prices at the two online bookstores. (Use d = A. com - B. com.) (Use 3 decimal places)

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

step-by-step explanation: so we look at the formula un = a + (n-1)d

un is the amount of seats

n is the nth term aka row number

a is the original sequence/row number

d is the difference between each term

so in this a=22 d=6 and n can remain as n because we are simply formjng a rule

lets put these in the equation

un=22+(n-1)(6)

this is your answer to part a

however

lets double check that this is correct, we'll try putting it into the second term

un=a+(n-1)d

u2=22+(2-1)(6)

u2=22+6

u2=28

as the question said the second row has 28 seats so now we know the formula we made is correct.

as for part b

un=a+(n-1)

its asking us to find a row with 100 seats.

remember un was the amount of seata so all we do is substitute this in.

un=100 a=22 d=6

un=a+(n-1)d

100=22+(n-1)(6)

so now we simplify to find n which is the row number.

100-22=22+(n-1)(6)-22

78=(n-1)(6)

78/6=(n-1)(6)/6

13=n-1

13+1=n-1+1

14=n

so now we know that in the 14th row there is 100 seats.

hope this and that you understood! its my first time using the app or anyone out on here : p its also me to revise so a bunch! ask more questions if you dont understand ☺

step-by-step explanation:

well if you round, things become much more simple. round 5.95 to 6, 4.25 to 4, and 1.05 to 1. now, add 6+4+1 and that would equal 11. so the items together would equal to about $11.

the answer to your question is c.)   volcanoes built the mountains and earthquakes tore them down.

step-by-step explanation: