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Sophie [7]
3 years ago
11

The federal government would like to test the hypothesis that the average age of men filing for Social Security is higher than t

he average age of women set using alphaequals0.05 with the data below. If Population 1 is defined as men and Population 2 is defined as​ women, determine the​ 90% confidence interval for the difference in population means. Men Women Sample mean 64.5 years 63.6 years Sample size 35 39 Population standard deviation 3.0 years 3.5 years A. ​(0.75, 1.05) B. ​(0.52, 1.28) C. ​(minus​0.34, ​2.14) D. ​(minus​1.37, ​3.17)
Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
4 0

Answer:

C     (3²/35+3.5²/39)    For more enquiries connect [email protected] AT MY G mail account

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Electric utility poles in the form of right cylinders are made out of wood that costs $25.46 per cubic foot. Calculate the cost
kotegsom [21]

Answer:

$ 1349.746624

Step-by-step explanation:

The volume of a cylinder

The formula for calculating the volume of a cylinder is expressed as:

V=πr²h

where:

r is the radius

h is the height

Given the following parameters

r = d/2 = 1.5/2 = 0.75ft

h = 30ft

Get the volume of the cylinder

V=π(0.75)²(30)

V= 53.0144...ft³

If the wod costs $25.46 per cubic foot, hence the cost of the wood will be 53.0144*25.46 = $ 1349.746624

4 0
2 years ago
Select the scenario below that demonstrates sampling bias. Select the correct answer below:
Vsevolod [243]

Answer:

C. Elizabeth wants to estimate the mean vacation days of coworkers at her company. She collects data by selecting a random group of coworkers within her department.

Step-by-step explanation:

Sampling Bias is case, in which some section of population have higher or lower chance of being selected in sample than others.

'Elizabeth wants to estimate the mean vacation days of coworkers at her company. She collects data by selecting a random group of coworkers within her department'. This case is of Convenience Sampling, where person selects sample only as per his/ her convenience.

Elizabeth has conveniently chosen sample workers from her department, so they have higher chance of being in sample, others have lesser chance.  Hence, this is Sampling Bias

7 0
3 years ago
classify the pair of angles. (supplementary, adjacent, vertical, or complementary) then find the value of x.
earnstyle [38]

Answer:

Supplementary angles; 148°

Step-by-step explanation:

180° - 32° = 148° (supplementary angles)

8 0
3 years ago
Write the number white the same value as 32
frutty [35]
I think the answer is
0.32
7 0
3 years ago
SOMEONE HELP ME PLEASE
Novay_Z [31]
Y - 5 = -1/2(x-1)

hope this helps!
3 0
3 years ago
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