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blsea [12.9K]
3 years ago
7

One machine makes 8 robots every 4 hours. How many robots will that machine make in 12 hours

Mathematics
1 answer:
Nikitich [7]3 years ago
4 0
The machine will make 24 robots
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A television network is deciding whether or not to give its newest television show a spot during prime viewing time at night. If
REY [17]

Answer:

b. 1.71

z=\frac{0.5296 -0.5}{\sqrt{\frac{0.5(1-0.5)}{827}}}=1.71  

Step-by-step explanation:

1) Data given and notation

n=827 represent the random sample taken

X=438 represent the  people that indicate that they would like to see the new show in the lineup

\hat p=\frac{438}{827}=0.5296 estimated proportion of people that indicate that they would like to see the new show in the lineup

p_o=0.5 is the value that we want to test

\alpha represent the significance level

z would represent the statistic (variable of interest)

p_v represent the p value

2) Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that the true proportion is higher than 0.5:  

Null hypothesis:p \leq 0.5  

Alternative hypothesis:p > 0.5  

When we conduct a proportion test we need to use the z statisitc, and the is given by:  

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

The One-Sample Proportion Test is used to assess whether a population proportion \hat p is significantly different from a hypothesized value p_o.

3) Calculate the statistic

Since we have all the info requires we can replace in formula (1) like this:  

z=\frac{0.5296 -0.5}{\sqrt{\frac{0.5(1-0.5)}{827}}}=1.71  

4) Statistical decision  

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.  

The significance level assumed is \alpha=0.05. The next step would be calculate the p value for this test.  

Since is a right tailed test the p value would be:  

p_v =P(Z>1.71)=0.044  

If we compare the p value obtained and the significance level assumed \alpha=0.05 we have p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the true proportion is higher than 0.5.  

8 0
3 years ago
Will give brainliest just solve 3x+3=30
Aneli [31]

Answer:

9

Step-by-step explanation:

3x + 3 = 30

     -3      -3

3x = 27

/3    /3

x= 9

7 0
3 years ago
Read 2 more answers
Which expression is equivalent to<br> 6 OF<br> 5y3<br> (5)<br> Ο Ο<br> 125y3<br> 125y5
ValentinkaMS [17]

Answer:

✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️

6 0
2 years ago
This is harder so i put more points
Inessa [10]

Answer:

Sheet metal costs <u>$20</u> per square foot.

Step-by-step explanation:

7.6x - 2.3x = 106

We are finding the value of x.

5.3x = 106

Divide both sides by 5.3.

x = 106 ÷ 5.3

x = 20

3 0
2 years ago
Read 2 more answers
Brainliest if correct
harkovskaia [24]

Answer:

3/8 & 4/8

Step-by-step explanation:

1/2 - 1/8 = 4/8 - 1/8 = 3/8

x - 1/8 = 3/8

x = 4/8    

6 0
2 years ago
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