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n200080 [17]
3 years ago
12

Twenty different video games showing alcohol use were observed. The duration times of alcohol use ​(in seconds) were recorded.

Mathematics
1 answer:
Crazy boy [7]3 years ago
8 0

Answer:

Degree of freedom = 19

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 20

For a t-test hypothesis it was claimed that the population mean is greater than 89 ​second.

1) df

Df denotes the degree of freedom.

  • The Degrees of Freedom refers to the number of values involved in the calculations that have the freedom to vary.

2) Degree of freedom  = n - 1

where n is the sample size

Degree of freedom = 20 - 1 = 19

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The given values are discrete. Use the continuity correction and describe the region of the normal distribution that corresponds
Bumek [7]

Answer:

Option B) The area to the right of 35.5

Step-by-step explanation:

Data:

Let the probability of the correct answers be denoted by the letter C.

The probability of no more than 35 defective CD's  can be 35 or less. Therefore, it is presented as follows:

P ≤  35

Let, the probability of more than 44 correct answers can be presented like this:

P > 44

Therefore, combining the two inequalities gives an area at the right of 35.5

5 0
3 years ago
In ΔUVW, the measure of ∠W=90°, UV = 6.2 feet, and WU = 1.2 feet. Find the measure of ∠V to the nearest tenth of a degree.
Crazy boy [7]

Answer:

m<V = 11.2 degrees

Step-by-step explanation:

In ΔUVW, the measure of ∠W=90°, UV = 6.2 feet, and WU = 1.2 feet.

From the triangle;

UV = hypotenuse = 6.2feet

WU = opposite = 1.2feet

Required

m<V

Using the SOH CAH TOA identity

sin m<V = opp/hyp

sin m<V = WU/UV

sin m<V = 1.2/6.2

sin m<V = 0.1936

m<V = arcsin(0.1936)

m<V = 11.16

m<V = 11.2 degrees ((to the nearest tenth of a degree)

4 0
3 years ago
Read 2 more answers
What is the slope of P=(4.5,-1) Q=(5.3,2).
Ulleksa [173]
\bf \begin{array}{lllll}&#10;&x_1&y_1&x_2&y_2\\&#10;%   (a,b)&#10;P&({{ 4.5}}\quad ,&{{ -1}})\quad &#10;%   (c,d)&#10;Q&({{ 5.3}}\quad ,&{{ 2}})&#10;\end{array}&#10;\\\\\\&#10;% slope  = m&#10;slope = {{ m}}= \cfrac{rise}{run} \implies &#10;\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{2-(-1)}{5.3-4.5}\implies \cfrac{2+1}{5.3-4.5}&#10;\\\\\\&#10;\cfrac{3}{0.8}\implies \cfrac{\frac{3}{1}}{\frac{08}{10}}\implies \cfrac{\frac{3}{1}}{\frac{4}{5}}\implies \cfrac{3}{1}\cdot \cfrac{5}{4}\implies \cfrac{15}{4}\implies 3\frac{3}{4}
6 0
4 years ago
Read 2 more answers
Please help!
AnnyKZ [126]

answer:

7.81

Step-by-step explanation:

ohh i like these questions this is the pythagorean theorem

1) a2+b2=c2

2) 5(2)+6(2)=c2

3) 25+36=c2

4) 61=c2

5) sqr root it

6) 7.81

Here are the senteces:

If those two were both the legs they would give us the answer of 7.81

gives us only two options of answers  and the other choice is putting

one of those options as a hypotenuse.So our chance for the third side

being 7.81 is 50% chance.

have a good day

4 0
3 years ago
The graph Y= F(x), what is f (-4)
guapka [62]

Answer:2

Step-by-step explanation:

5 0
4 years ago
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