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Shtirlitz [24]
3 years ago
14

Simplify the following expression

Mathematics
1 answer:
lukranit [14]3 years ago
6 0

Answer:

x-3 / (x+1)(5x-2)

Step-by-step explanation:

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artcher [175]
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In a recent survey, 72 out of 100 consumers reported that they preferred plastic bags instead of paper bags for their groceries.
kupik [55]

Answer:

a) P=0.03

b) α=0.05

c) 0.72

d) 100

e) 0.72

Step-by-step explanation:

a) The P-value is the probability of the sample result. In this case the P-value is 0.03.

b) The level of significance is the threshold of probabilty for the null hypothesis to be reejcted or not. It is contrasted with the P-value to know if the effect is significant. In this case, the level of significance is 0.05.

NOTE: if it is a two-side test, the level of significance is 0.1 (two times 0.05).

c) The sample proportion is the one that results from the sample data. In this case, the sample proportion is 0.72.

p=72/100=0.72

d) The sample size is the amount of consumers reported. In this case is 100 customers.

e) The null value is 0.72 (equal to the sample proportion), because it is tested if there is no difference between the population proportion and the sample proportion.

3 0
3 years ago
)) What is 2.825 rounded to the nearest whole number?
Shalnov [3]

Answer:

2.83

Step-by-step explanation:

25 round off is equal to 30

so we can write 2.825 = 2.83 in form of 2 digits

83 round off to 80

2.83 is equal to 2.8

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Answer:

There are 26 different possible outcomes. the probability of the computer choosing the first letter of your name is 1 out of 26.

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