Answer:
Whenever n increases we get std deviation of sample mean decreases.
Step-by-step explanation:
Given that ducation of the self-employed: according to a recent current population reports, the population distribution of number of years of education for self-employed individuals in the united states has a mean of 13.6 and a standard deviation of 3.0.
The central limit theorem says sample mean follows normal for randomly drawn samples of large sizes.
a) Hence X bar follows a normal with mean = 13.6
and std dev = std dev of sample/square root of sample size.
Hence std dev of x bar = 3/sqrt 100 = 0.3
b) when n =400 square root of n becomes double making the std dev of sample mean exactly 1/2
Hence new std dev = 3/sqrt 400 = 0.15
Whenever n increases we get std deviation of sample mean decreases.
Hey there Unrazed90,
Answer :
100% = $25.30
1% = $25.30 / 100
= $0.253
8% = $0.253 x 8
= $2.024
Total = $25.30 + $2.024
= $27.324
= $27
Hope this helps :D
<em>~Natasha ♥</em>
Answer:
z^5
Step-by-step explanation:
z^8 * z^-3
Since we are multiplying exponents and the bases are the same, we can add the exponents
z^(8-3)
z^5
Gain - loss = profit
55- 45 = $10 net profit
Answer:
6032 gallons
Step-by-step explanation:
The diameter of the cylindrical swimming pool is 16 ft
The height(h) of the pool is 4 ft
Volume of a cylinder is given by;
Volume (v) = π × r² × h
Radius (r) = 16/2 ft = 8 ft
v = π × (8 ft)² × 4ft = 804.247719319ft³
Given; 1ft³ = 7.5 gallons (gal)
804.247719319ft³ would equal to how many gallons?
Cross multiplying gives,
× 7.5 gal = 6031.85789489
Which equals to 6032 gallons rounded up to whole number.