Answer:
a. range: 4
b. 5 students
c. mean: 8
Step-by-step explanation:
range: subtract the smallest number from the largest number in the data.
10 - 6 = 4
students amount was counted by the number of marks given.
mean: add the data together. (40) divide the sum by the number of marks provided. (5)
40 divided by 5 equals 8
Answer:
Lamont performed better in psychology test.
Step-by-step explanation:
please kindly see the attached files for explanation
Answer:
2/9
Step-by-step explanation:
i think its but im not sure
Answer:
The answer is <em>C</em>
Explanation: Given:A security alarm requires a four-digit code. The code can use the digits 0–9 and the digits cannot be repeated.
there is only 2 numbers which are greater than 7 i.e. 8 and 9. ∴ there is 2 possibility for first place.
For the remaining 3 digits there is 9 possibilities (including 1 which would left after choosing 1 from first place )
No of ways for the alarm code beginning with a number greater than 7= 2 P 1 x 9 P 3
<em>Total ways of code with 4 digits= 10 P 4.</em> Hope this helps :)
