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Ber [7]
2 years ago
8

It takes a while for new factory workers to master a complex assembly process. During the first month that the new

Mathematics
1 answer:
Citrus2011 [14]2 years ago
8 0

Answer:

Will I think it will be A

Step-by-step explanation:

because it say it was a positive

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Answer:

The answer I got was 15 3/4 ft 2

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3 years ago
Suppose in the population, the Anger-Out score for men is two points higher than it is for women. The population variances for m
tatuchka [14]

Answer:

a)= 2

b) 6.324

c) P= 0.1217

Step-by-step explanation:

a) The mean of the sampling distribution of X`1- X`2 denoted by ux`-x` = u1-u2 is equal to the difference between population means i.e = 2 ( given in the question)

b) The standard deviation of the sampling distribution of X`1- X`2 ( standard error of X`1- X`2) denoted by σ_X`1- X`2 is given by

σ_X`1- X`2 = √σ²/n1 +σ²/n2

Var ( X`1- X`2) = Var X`1 + Var X`2 =  σ²/n1 +σ²/n2

so

σ_X`1- X`2 =√20 +20 = 6.324

if the populations are normal the sampling distribution X`1- X`2 , regardless of sample sizes , will be normal with mean u1-u2 and variance σ²/n1 +σ²/n2.

Where as Z is normally distributed with mean zero and unit variance.

If we take X`1- X`2= 0 and u1-u2= 2  and standard deviation of the sampling distribution = 6.324 then

Z= 0-2/ 6.342= -0.31625

P(-0.31625<z<0)= 0.1217

The probability would be 0.1217

8 0
2 years ago
The slopes of perpendicular lines are _______ reciprocals.
MariettaO [177]
The negative reciprical


7 0
3 years ago
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150 is the answer...

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Step-by-step explanation:

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3 years ago
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