Step-by-step explanation:
1st digit is 1 number (1)
2nd digit is (3,4,5) so it's 3 numbers
third digit is (6,7,8,9) is it's 4 numbers
last 7 digits is 10 (0,1,2,3,4,5,6,7,8,9)
multiply
1*3*4*10=120
so answer is 120 phone numbers
Answer is -10
Work: -(5+5)
Answer:
It's C; you did it right.
Answer: Last Option is correct.
Step-by-step explanation:
Since we have given that
Total number of population = 25000
Percent of sample of Jason = 0.24%
Percent of sample of Yolanda's = 0.32%
So, Number of population according to Jason's sample is given by

Number of population according to Yolanda's sample is given by

Both the sample can be used to make inferences about the population
Hence, Last Option is correct.