All categories

3 years ago

If you have a population standard deviation of 9 and a sample size of 144, what is your standard error of the mean?

Mathematics

2 answers:

andrezito [222]3 years ago

6 0

So your answer would be 1296

Anettt [7]3 years ago

4 0

Answer: 0.75

Step-by-step explanation:

Standard error is the quotient of the standard deviation and the square root of the sample size. From the question, Standard error= 9/√144= 3/4 or 0.75

You might be interested in

twin oaks soccer field is a rectangle. The longer side of the field is 108 yards long. The shorter side is 56 yards long. What i

Rus_ich [418]

Answer:

P = 328 yards

Step-by-step explanation:

formula is P= 2l + 2w

$p = 2(108) + 2(56) \\ = 216 + 112 \\ = 328 \: yards$

5 0

2 years ago

15/60=3/4 are they equivalent

Dvinal [7]

15/60 simplified is 1/4

1/4 is not equal to 3/4

4 0

3 years ago

Perform the division and leave the result in trigonometric form.

Anettt [7]

Answer:

$\frac{1}{2}$ ( cos40° + isin40°)

Step-by-step explanation:

To divide

$\frac{r_{1(cosx_{1}+isinx_{1}) } }{r_{2}(cosx_{2}+isinx_{2}) }$

= $\frac{r_{1} }{r_{2} }$ [ cos(x₁ - x₂) + isin(x₁ - x₂)

Given

$\frac{2(cos90+isin90}{4(cos50+isin50)}$

= $\frac{2}{4}$ ( cos(90 - 50)° + isin(90 - 50)°

= $\frac{1}{2}$ ( cos40° + isin40° )

8 0

3 years ago

If z = 3cis30°, z3 in rectangular form is _____ +_____ i.

oee [108]

The rectangular form is 3c/30=z
Z=10 3c//30
10z+70x + 17x-10z

6 0

3 years ago

Beinggreat78 answer fast please :')

Virty [35]

Answer:

Step-by-step explanation:

The radius is always half the diameter

6 0

2 years ago