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ValentinkaMS [17]
3 years ago
11

A sample of n = 25 observations from a normal population is drawn. the population mean is 100 and the population (known) standar

d deviation is 20. find the probability that the sample mean is greater than 95.
Mathematics
1 answer:
Oliga [24]3 years ago
7 0
The answer I think is D.
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Dmitrij [34]

Answer:

a) number 2 and 3 appeared a minimum number of times

b) number 5 appeared a maximum number of times

c) number 1, 4 and 6 appear an equal number of times (4 times). Also number 2 and 3 appear an equal number of times (1 time)

d) Even numbers turned up 9 times. The even numbers in a dice are 2 4 and 6. Add up how many times they came up: 1+4+4=9

f) Odd numbers turned up 11 times. The odd numbers in a dice are 1, 3 and 5. Add up how many times they came up: 4+1+6=11

7 0
3 years ago
mrs wong manages a restaurant which is currently hiring. if today she interviewed 4 waiters and 2 chefs, how like the first appl
Yanka [14]
4/6 chance or 2/3 chance. i’m not sure if this is like probability i’m at a middle school level
5 0
3 years ago
Which graph represents the function y = cos(4x)?<br><br> Answer is graph B
VARVARA [1.3K]

Answer:

Step-by-step explanation:

Let the equation of the cosine function is,

y = Acos(Bx)

From the graph attached,

A = Amplitude = \frac{1-(-1)}{2}

   = 1

B = \frac{2\pi}{\text{Period}}

B = \frac{2\pi}{\frac{\pi}{2}-0}

B = \frac{4\pi}{\pi}

B = 4

Therefore, equation of the cosine wave given in the graph will be,

y = 1.Cos(4x)

y = Cos(4x)

7 0
3 years ago
Read 2 more answers
PLS HELP!! need the answer asap
Tomtit [17]

Answer:

its D

Step-by-step explanation:

..............................

180-65

4 0
3 years ago
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What is the slope of (-3,1) and (0,7)?
Usimov [2.4K]
Over 3 up 6, or better know as 3/6
3 0
3 years ago
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