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nataly862011 [7]
3 years ago
12

Is 2 an irrational number

Mathematics
2 answers:
pav-90 [236]3 years ago
5 0
66666666666666666666666
Lena [83]3 years ago
3 0

Answer:

no its rational

Step-by-step explanation:

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A group of 54 college students from a certain liberal arts college were randomly sampled and asked about the number of alcoholic
aliya0001 [1]

Answer:

P-value =  0.4846

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 4.73

Sample mean, \bar{x} = 4.35

Sample size, n = 51

Alpha, α = 0.05

Sample standard deviation, s = 3.88

First, we design the null and the alternate hypothesis

H_{0}: \mu = 4.73\\H_A: \mu \neq 4.73

We use Two-tailed z test to perform this hypothesis.

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{4.35 - 4.73}{\frac{3.88}{\sqrt{51}} } = -0.699

Now, z_{critical} \text{ at 0.05 level of significance } = \pm 1.96

We can calculate the p-value with the help of standard normal table.

P-value =  0.4846

Since the p-value is higher than the significance level, we fail to reject the null hypothesis and accept it.

We conclude that this college has same drinking habit as the college students in general.

7 0
3 years ago
Three people become infected with a virus that spreads quickly. Each day that passes, the number of infected people doubles. How
avanturin [10]

3x \times 2 = y
this is what I would come up with because.
y=the number of people infected
x=the number of days that have passed
5 0
3 years ago
Read 2 more answers
What is the solution to the equation-0.2(x-20)=44-x
Black_prince [1.1K]

Answer:

x = 50

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
in 2009, a gullop poll found that 47% of Americans favored protection of the environment at the risk of limiting energy supplies
Vikki [24]

Answer:

your

Step-by-step explanation:

welcome

5 0
3 years ago
three different are rung at intervals of 36 minutes 40 minutes and 48 minutes if they were rung together at 9 a.m. at what time
Lena [83]

To find the time in which all the bells ring together, we need to find the LCM of 36,40,48.

Prime factorization of 36=2×2×3×3

Prime factorization of 40=2×2×2×5

Prime factorization of 48=2×2×2×2×3

Hence, LCM of 36,40,48=2×2×2×2×3×3×5=720 seconds.

 

720seconds=  

60

720

​

minutes=12minutes

Hence, all the bells will ring together after 12 mi

6 0
2 years ago
Read 2 more answers
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