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PolarNik [594]
3 years ago
9

You believe the population is normally distributed and you know the standard deviation is σ = 6.9 σ = 6.9 . You obtain a sample

mean of M = 64.4 M = 64.4 for a sample of size n = 32 n = 32 . What is the critical value for this test?
Mathematics
1 answer:
kaheart [24]3 years ago
8 0

The critical values is 16

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In a company 60% of the workers are men is 880 women work for the company how many workers are there in all
borishaifa [10]
I will do my best to answer this question due to the gramatical errors made making it difficult to read and understand.
assuming that the 880 is the number of women employed that makes up 40% of the company employees
880+ (880*1.5) = 2200 employees total
7 0
3 years ago
The ratio of boys to girls in Ella’s grade is 3 to 4. The ratio of boys to girls in Minh’s grade is 4 to 5. Each grade has a tot
Alex_Xolod [135]

Answer:

12 boys

Step-by-step explanation:

I believe the answer is 12 boys. I hope this helps!

8 0
3 years ago
The viewing room at a planetarium is in the shape of a hemisphere. The diameter of the hemisphere is 48 feet. What is the volume
Elis [28]
A hemisphere is half a sphere.
So, the volume of a hemisphere is the half of the volume of the complete sphere.
The formula for the volume of a sphere is:
V = (4/3) π (radius)^3
Using π = 3.14 and radius = diameter / 2 = 50 feet / 2 = 25 feet.
You get:
V = (4/3) (3.14) (25 feet)^3 = 65,416.7 feet^3
Answer: 65,416.7 cu. ft.

4 0
3 years ago
Read 2 more answers
Solve the proportion.<br> 4<br> y<br> =<br> 7<br> ?<br> y =
Leni [432]

Answer:

y=28/5

Step-by-step explanation:

Okay so for this we can use cross- multiplication. Basically, the product of the numerator of the first number and the denominator of the second is equal to the product of the denominator of the first and the numerator of the second.

What I mean is: 4*7=5*y

so,

28=5y

y=28/5

4 0
3 years ago
2,500 principal earning 4% compounded quarterly after 4 years
Kay [80]
A=p(1+r/100)^n
A=2500(1+4/400)^16
A=2931.45
5 0
4 years ago
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