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ohaa [14]
2 years ago
14

Worker A can finish a job in

Mathematics
1 answer:
Oksi-84 [34.3K]2 years ago
8 0

Answer:

4

Step-by-step explanation:

\frac{1}{2}  -  \frac{1}{3} \\  \\  =  \frac{1}{6}  \times 24 \\  = 4

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3 years ago
A simple random sample of size n=40 from a population with mu = 74 and standard deviation= 7. Does the population need to be nor
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5 0
3 years ago
In the standard Normal distribution, which z-score represents the 99th percentile?
nydimaria [60]

The Z- score representing the 99th percentile is given by 2.33

Problems of commonly distributed samples can be solved using the z-score formula.

For a set with a standard deviation, the z-score scale X is provided by:

Z = ( x- mean )/ standard deviation

Z-score measures how many standard deviations are derived from the description. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the scale is less than X, that is, the X percentage. Subtract 1 with p-value, we get the chance that the average value is greater than X.

To Find the z-result corresponding to P99, 99 percent of the normal distribution curve.

This is the Z value where X has a p-value of 0.99. This is between 2.32 and 2.33, so the answer is Z = 2.33

For more information regarding normal distribution, visit brainly.com/question/12691636

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3 0
2 years ago
A women is twice as old as her daughter . twenty one years ago she was three times her daughter . What is the women's present ag
babymother [125]

Answer:

84

Step-by-step explanation:

women=x

daughter=y.

x=2y.

x-21=3(y-21).

2y-21=3y-63.

42=y.

x=84.

Hope this helps plz hit the crown :D

3 0
3 years ago
Read 2 more answers
What is two congruent parts
LuckyWell [14K]
Two congruent parts mean the two parts you have are the same or they are equal to eachother. 
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2 years ago
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