Answer:
70,000.
Step-by-step explanation:
7000 is (1/10) of 70,000 - as 7000*10=70,000.
Hope is help ba bye!
- miah
d1 = 51(t)
d2 = 71(8 - t)
d1 + d2 = 508
and now you just have to solve for t.
Answer:
a) sample size is 40
Step-by-step explanation:
(a)
minutes
Margin of error, E is 75 seconds E=75/60= 1.25 minutes.
The level of significance
for 95% level of significance
For 95% confidence interval
from standard deviation table
Sample size required, n

Rounding off, n=40
Sample size =40
Keywords:
95% confidence, sample size, Wall Street Journal
Answer:
8.7 is your answer
Step-by-step explanation: