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I am Lyosha [343]
3 years ago
15

A random sample is drawn from a population with mean μ = 66 and standard deviation σ = 5.5. use table 1.

Mathematics
1 answer:
creativ13 [48]3 years ago
7 0
<span>A random sample is drawn from a population with mean μ = 66 and standard deviation σ = 5.5. use table 1.
a. is the sampling distribution of the sample mean with n = 16 and n = 36 normally distributed? yes, both the sample means will have a normal distribution. no, both the sample means will not have a normal distribution. no, only the sample mean with n = 16 will have a normal distribution. no, only the sample mean with n = 36 will have a normal distribution.
b. can you use the standard normal distribution to calculate the probability that the sample mean falls between 66 and 68 for both sample sizes? yes, for both the sample sizes, standard normal distribution could be used. no, for both the sample sizes, standard normal distribution could not be used. no, only for the sample size with n = 16, standard normal distribution could be used. no, only for the sample size with n = 36, standard normal distribution could be used.
c. calculate the probability that the sample mean falls between 66 and 68 for n = 36. (round intermediate calculations to 4 decimal places, "z" value to 2 decimal places, and final answer to 4 decimal places.)</span>
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3 years ago
A sector of a circle has a diameter of 10 feet and an angle of 2π/3 radians. Find the area of the sector.
VARVARA [1.3K]

The area of the sector  2π/3 radians with diameter 10 feet 75π feet²

The arc period of a circle can be calculated with the radius and relevant perspective using the arc period method.

Diameter =  10 feet

radius = 5 feet

angle =   2π/3 radians

⇒angle= arc/radius

⇒  2π/3 radians° =arc/10

⇒ arc =2π/3 radians *10

 ⇒arc=2π/3 radians*10

⇒arc = 20/π43 feet

Area of a circle = π*r²

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∵ area of complete circle is π25

∴ area of 2π/3 radians = π25/2π *2π/3 radians

                                     = 75π  answer

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The answer is 3.1 because 4 is under 5
3 0
2 years ago
Read 2 more answers
Please help 10points!!!!!!!!
Helga [31]

Answer:

the coifficent is 4/3

Step-by-step explanation:

hope this helps :)

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Now add the two zeros to your answer to get 69,700 which is the final answer
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2 years ago
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