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Paraphin [41]
3 years ago
13

In a random sample of 63 women at a company, the mean salary is $48,902 with a standard deviation of $5270. in a rando sample of

50 men at the company the mean salary is $53,454 with a standard deviation of $4677. Which interval in the 95% confidence interval for the difference between the mean salaries of all women and men at the company?
A. 3614.81 , 5489.19
B. 2715.11 , 6388.89
C. 4083,40 , 5020.60
D. 2134.05 , 6969.95
Mathematics
1 answer:
sdas [7]3 years ago
4 0
So u would make at least 101,000 per year
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2. Delia and Beto left for school at the same time.
Tema [17]

<u>Answer:</u>

Beto will get to the school first.

<u>Step-by-step explanation:</u>

We are given that Delia lives 3/4 mile from school and walks at a pace of

16 minutes per mile.

So Delia takes \frac{3}{4} \times 16 = 12 minutes to reach school.

While Beto lives 3 1/2 miles from school  and bikes at a pace of 3 minutes per mile.

So Beto takes \frac{7}{2} \times 3 = 10.5 minutes to reach school.

Therefore, Beto will get to the school first.

5 0
3 years ago
Which of the following prefixes would be best for measuring small objects like the width of a piece of paper?
Valentin [98]
Hecta is the prefix meaning 100 times;
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7 0
3 years ago
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A frustum is formed when a plane parallel to a cone’s base cuts off the upper portion as shown. Which expression represents the
Bezzdna [24]
Think of the two pieces together as a single cone of height 19, and its volume.
Then think of only the upper piece as a cone, and find its volume.
The volume of the frustum is the total volume minus the volume of the upper piece.

The volume of a cone is:

V = \dfrac{1}{3} \pi r^2 h

Total volume:

V_t = \dfrac{1}{3} \times \pi \times 7.5^2 \times 19

Volume of upper cone:

V_u = \dfrac{1}{3} \times \pi \times 3.5^2 \times 8

Volume of frustum:

V_f = \dfrac{1}{3}\pi(7.5^2)(19) - \dfrac{1}{3}\pi(3.5^2)(8)



3 0
4 years ago
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I don't know how to do this. I forget plz help
Leno4ka [110]
Ok so 
0.5%=0.005
0.005x=8
x=8/0.005
x=1600
8 is 0.5% of 1600
Hope this helps
If u still don't understand plz message me
If u understand plz brainlest me
If you continue with the same formula with a different problem then you will get it correct 
Thank you!
3 0
3 years ago
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Is 8000 meters greater than 9 kilometers?
mrs_skeptik [129]

Answer:

no

Step-by-step explanation:

6 0
1 year ago
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