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Nana76 [90]
3 years ago
5

How would I do this

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
5 0
When,
correct is 0 then p is 0/20.
correct is 1 p is 1/20
correct is 2 p is 2/20 that is 1/10
correct is 3 p is 3/20.
correct is 4 p is 4/20 that is 1/5
correct is 5 p is 5/20 that is 1/4

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Watching TV: In 2012, the General Social Survey asked a sample of 1326 people how much time they spent watching TV each day. The
Varvara68 [4.7K]

Answer:

We <em>fail to reject H₀ </em>as there is insufficient evidence at 0.5% level of significance to conclude  that the mean hours of TV watched per day differs from the claim.

Step-by-step explanation:

This is a two-tailed test.

We first need to calculate the test statistic. The test statistic is calculated as follows:

Z_calc = X - μ₀ / (s /√n)

where

  • X is the mean number of hours
  • μ₀ is the mean that the sociologist claims is true
  • s is the standard deviation
  • n is the sample size

Therefore,

Z_calc = (3.02 - 3) / (2.64 /√(1326))

           = 0.2759

Now we have to calculate the z-value. The z-value is calculated as follows:

z_α/2 = z_(0.05/2) = z_0.025

Using the p-value method:

P = 1 - α/2

  = 1 - 0.025

  = 0.975

Thus, using the positive z-table, you will find that the z-value is

1.96.

Therefore, we reject H₀ if | Z_calc | > z_(α/2)

Thus, since

| Z_calc | < 1.96, we <em>fail to reject H₀ </em>as there is insufficient evidence at 0.5% level of significance to conclude  that the mean hours of TV watched per day differs from the claim.

6 0
3 years ago
Hello please can some one help me I don’t know how to do these math
erik [133]
1) Put all the numbers in numerical order :
15, 23, 24, 25, 25, 25, 27
The median is the middle of the numbers : 25
Mode is the value that occurs more often : 25

2) Put all the numbers in numerical order :
2, 3, 3, 3, 3, 4, 4, 5
The middle of the numbers is 3 and 3
so, 3 + 3 = 6
6 : 2 = 3

Median = 3
Mode = 3


3) Put all the numbers in numerical order :
5, 7, 8, 9, 9, 10, 10, 10, 12
Median = 9
Mode = 10

4) Put all the numbers in numerical order :
0, 1, 1, 2, 2, 3, 3, 3, 4, 4

Median
2 + 3 = 5 : 2 = 2,5
Mode = 3


5) Put all the numbers in numerical order :
12, 13, 15, 18, 25
Median = 15
Mode = 0 (None)

6) Put all the numbers in numerical order :
1, 1, 2, 2, 3, 3, 3, 4, 4, 4, 5
Median = 3
Mode = 3 and 4

7) Put all the numbers in numerical order :
6, 8, 9, 10, 10, 12

Median
9 + 10 = 19 : 2 = 8
Mode = 10


8) Put all the numbers in numerical order :
28, 30, 30, 30, 30, 31, 31, 31, 31, 31, 31, 31

Median
31 + 31 = 62 : 2 = 31
Mode = 31
5 0
3 years ago
Please answer the question below and give TWO different way you can use to write 187.54 in expanded form.
Irina-Kira [14]
1.)100+80+7+0.5+0.04 or you could do it like 2.)1x100+8x10+7x1+5x0.1+4x0.01
5 0
3 years ago
What’s the correct answer
astra-53 [7]
I think the correct answer is A. 1
7 0
3 years ago
Farmer brown picked oranges. He gave 3/8 To John and 2/3 of the remainder to Steve. If Steve recieved 75 oranges, how many did f
insens350 [35]
Find the ratio of number of oranges received by John and Steve , you get 9:16

do cross multiplication
9:16
x:75
\frac{75 \times 9}{16}  = 42
ignore the decimals
8 0
3 years ago
Read 2 more answers
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