Answer: 94x-1
Step-by-step explanation:
Answer:
c=35
Step-by-step explanation:
c=180-d
c=180-145
c=35
Answer: <u>56.9</u> years to <u>63.1</u> years.
Step-by-step explanation:
Confidence interval for population mean (when population standard deviation is unknown):
, where = sample mean, n= sample size, s= sample standard deviation, = Two tailed t-value for .
Given: n= 24
degree of freedom = n- 1= 23
= 60 years
s= 7.4 years
Two tailed t-critical value for significance level of and degree of freedom 23:
A 95% confidence interval on the true mean age:
Hence, a 95% confidence interval on the true mean age. : <u>56.9</u> years to <u>63.1</u> years.
Answer:
120 - (W*7)= A
Step-by-step explanation:
Let's say after 3 weeks. $120 is what he owes her in the beginning. He pays her $7/week.
After 3 weeks, he owes her 120 - (W*7)= A.
W=3, since we are 3 weeks along. So, after 3 weeks he still owes her
120 - (3*7)= A >>> 120 - 21= A >>> 99= A.