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Llana [10]
2 years ago
12

HELP ME ASAP URGENT!!!

Mathematics
1 answer:
LenaWriter [7]2 years ago
8 0
The answer is infinite solutions linear equations always have infinite solutions when solving them
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A recent national survey found that high school students watched an average (mean) of 7.8 movies per month with a population sta
notka56 [123]

Answer:

Step-by-step explanation:

Given that :

Mean = 7.8

Standard deviation = 0.5

sample size = 30

Sample mean = 7.3 5.4772

The null and the alternative hypothesis is as follows;

\mathbf{ H_o: \mu  \geq  7.8}

\mathbf{ H_1: \mu  <  7.8}

The test statistics can be computed as :

z = \dfrac{X- \mu}{\dfrac{\sigma}{\sqrt{n}}}

z = \dfrac{7.3- 7.8}{\dfrac{0.5}{\sqrt{30}}}

z = \dfrac{-0.5}{\dfrac{0.5}{5.4772}}

z = - 5.4772

The p-value at  0.05 significance level is:

p-value = 1- P( Z < -5.4772)

p value = 0.00001

Decision Rule:

The decision rule is to reject the null hypothesis if  p value is less than 0.05

Conclusion:

At  the 0.05 significance level,  there is sufficient information to reject the null hypothesis. Therefore ,we  conclude that college students watch fewer movies a month than high school students.

8 0
3 years ago
Find the values of x for which the denominator is equal to zero for y=3x+5/x-6.
dusya [7]

\huge\color{black}\underline\mathbb{\:ANSWER}

\green{••••••••••••••••••••••••••••••••••••••••••••••••••}

Find the values of x for which the denominator is equal to zero for y=3x+5/x-6.

x = −5

x = 6

<h2>x = −6</h2>

therefore the answer is

<h2>x = −6</h2>

\green{••••••••••••••••••••••••••••••••••••••••••••••••••}

\tt\color{black}{12:14AM}

\huge \tt{4/2/22}

(ノ^_^)ノ

4 0
2 years ago
Read 2 more answers
If y varies directly with x and y=20.4 when x=6, find the value of y when x=-5?
a_sh-v [17]

Answer:

y=-17

Step-by-step explanation:

y=mx

20.4=m×6

20.4÷6=m

3.4=m

y=3.4×-5

y=-17

4 0
2 years ago
Read 2 more answers
Find the slope of the line that passes through (2,21) and (84, -30)
Flura [38]

Answer:

-51/82.

Explanation:

Given two points (x1,y1)=(2,21) and (x2,y2)=(84,-30), we find the slope using the formula below:

m=\frac{y_2-y_1}{x_2-x_1}

Substitute the given points:

\begin{gathered} m=\frac{-30-21}{84-2} \\ m=-\frac{51}{82} \end{gathered}

The slope of the line that passes through the given points is -51/82.

3 0
1 year ago
I need help on this exam for math correct answers please
Scilla [17]
The answer is square root of 39. 64-25=39
7 0
3 years ago
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