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jenyasd209 [6]
3 years ago
5

When testing μ, how do we decide whether to use the standard normal distribution or a Student's t distribution? If the x distrib

ution is normal and n ≥ 30 with known σ we use the Student's t. With the same conditions and unknown σ we use the standard normal. If the x distribution is normal and n ≥ 20 with known σ we use the standard normal. With the same conditions and unknown σ we use the Student's t. If the x distribution is normal and n ≥ 30 with known σ we use the standard normal. With the same conditions and unknown σ we use the Student's t. Whenever we assume the populations are independent, we always use the standard normal.
Mathematics
1 answer:
Helga [31]3 years ago
8 0

Answer:not sure

Step-by-step explanation:

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DaniilM [7]

Answer:

its b

Step-by-step explanation:

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Solve and graph each Inequality.<br><br> l2c-5l&lt;9
EastWind [94]
Hello this should be your graph here

3 0
3 years ago
What is the equation? Pls show your work.
Semmy [17]

Answer:

y=2x-2

Step-by-step explanation:

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let m= the slope

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4 0
3 years ago
The denominator of a fraction is greater than the numerator by 8. If the numerator is increased by 17 and denominator is decreas
MA_775_DIABLO [31]

Answer:\frac{13}{21}

Step-by-step explanation:

2( N+ 17) = 3 (N +7)

2N+ 34= ·3N+ 21

N= 13

D= N+8 = 13+8 = 21

Fraction is \frac{13}{21}

When Im using N is equal to numerator and D for denominator, in order to get the fraction we substitute and the results combine in the fraction like this  \frac{N}{D}

3 0
1 year ago
Suppose a baseball player had 229 hits in a season. In the given probability distribution, the random variable x represents the
Andru [333]

Answer:

a) summation of p(x)/n ie. (0.1712+...+0.0051)/6=0.16675

b)1

c).var=summation (x-mean) squared /n ie (0.1712-0.16675)squared +...+(0.0051-0.16675)squared/n=0.027351948

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Step-by-step explanation:

8 0
3 years ago
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