The common difference dividing each term from the next is 18.
Then a(n) = -5 + (n-1)(18)
Check: find a(1) using this formula. Is a(1) = -5? a(1) = -5 + (1-1)(18) does equal -5.
Find a(2); a(2) = -5 + (2-1)(18) = -5 + 18 = 13. Correct.
Answer:
D) 56 inches to 74 inches
Step-by-step explanation:
By the Empirical Rule, 99.7% of data in a normal distribution spread across ±3σ standard deviations from the mean μ.
Hence, the range maximum is μ+3σ = 65+3(3) = 65+9 = 74 inches, and the range minimum is μ-3σ = 65-3(3) = 65-9 = 56 inches
Thus, 99.7% of the population will have a height within the range of 56 inches to 74 inches
K=29 is the correct answer
Answer:
81%.
Step-by-step explanation:
To find the average attendance, you will need to find the the total of the average attendance from all 10 days.
Since we know the average attendance of the first 4 meetings was 75%, we can simply assume that those 4 days had this attendance. For this, you can do:
4×75= 300.
Now, for the remaining 6 days, you will need to multiply 85% by the amount of days. 6×85= 510.
Now, to find the average, we will need to add these together:
300+510= 810...
Then divide the result from the total number days to find the AVERAGE:
810÷10= 81%.
My caculation it would be 16 i hope that this help you
