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Fofino [41]
3 years ago
6

According to statistics, a person will devote 37 years to sleeping and watching TV. The number of years sleeping will exceed the

number of years watching TV by 19. Over the lifetime, how many years will the person spend on each of these activities? The person will spend X years watching TV and X years sleeping
Mathematics
1 answer:
MakcuM [25]3 years ago
7 0
S + w = 37
s = w + 19

w + 19 + w = 37
2w + 19 = 37
2w = 37 - 19
2w = 18
w = 18/2
w = 9 <=== 9 years watching t.v.

s = w + 19
s = 9 + 19
s = 28 <=== 28 years sleeping
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Huh? not sure what you mean


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Suppose 232subjects are treated with a drug that is used to treat pain and 50of them developed nausea. Use a 0.01significance le
Margarita [4]

Answer:

A

   The  correct option is B

B

   t =  0.6093

C

 p-value  =  0.27116

D

The  correct option is  D

Step-by-step explanation:

From the question we are told that

    The  sample size is  n  =  232

    The  number that developed  nausea  is X =  50

    The population proportion is  p  =  0.20  

 

The  null hypothesis is   H_o : p  =  0.20

The  alternative hypothesis is  H_a :  p > 0.20

Generally the sample proportion is mathematically represented as

     \r p  =  \frac{50}{232}

     \r p  =  0.216

Generally the test statistics is mathematically represented as

 =>           t =  \frac{\r p  -  p }{ \sqrt{ \frac{p(1- p )}{n} } }

=>           t =  \frac{ 0.216 - 0.20 }{ \sqrt{ \frac{ 0.20 (1- 0.20 )}{ 232} } }

=>        t =  0.6093

The  p-value obtained from the z-table is

       p-value  =  P(Z >  0.6093) =  0.27116

  Given that the  p-value >  \alpha  then we fail to reject the null hypothesis

5 0
3 years ago
I wanted to know what 22/7 • 1/4 and then when you multiply it what will the answer be please help me gotta turn this in tomorro
MissTica

Answer:11/14

Step-by-step explanation:

Let's multiply the numerators first. 22 x 1 is 22, so your numerator is 22.

The denominator: 7 x 4= 28, your denominator is 28.

Your answer <u><em>would</em></u> be 22/28.

However, we can simplify this.

22 and 28 are both divisible by 2.

22/2=11

28/2=14

Your final answer is <u><em>11/14</em></u>

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4 years ago
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