A person invested $510 in an account growing at a rate allowing the money to double every 9 years. How long, to the nearest tent
1 answer:
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Answer: 191
Step-by-step explanation:
Formula to find the minimum sample size required to estimate a population proportion or percentage:
, where = proportion estimated by prior study.
E= Margin of error.
z* = Critical z-value.
Given : Confidence level = 95%
Critical value for 95% confidence = z*=1.96
E= 7%= 0.07
Then,
Hence, the minimum sample size required=191
Answer:
6 miles
Step-by-step explanation:
You Can make a proportion
=
Now cross multiply
45*26/3 is 360
and 60*x is 60x
make an equation
60x=360
x=6
So 6 miles