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Nana76 [90]
2 years ago
7

I need help on this equation

Mathematics
1 answer:
frutty [35]2 years ago
3 0
X= 8

Wish you luck with your studying
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a teacher awarded 50 marks to his least student in a class test. How many marks was awarded to the best student if he was 40% be
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In a study of the accuracy of fast food​ drive-through orders, one restaurant had 36 orders that were not accurate among 324 ord
tia_tia [17]

Answer:

We do not have sufficient evidence to reject the claim that ,the rate of inaccurate orders is equal to​ 10%.

Step-by-step explanation:

We want to use a 0.01 significance level to test the claim that the rate of inaccurate orders is equal to​ 10%.

We set up our hypothesis to get:

H_0:p=0.10------->null hypothesis

H_1:p\ne0.10------>alternate hypothesis

This means that: p_0=0.10

Also, we have that, one restaurant had 36 orders that were not accurate among 324 orders observed.

This implies that: \hat p=\frac{36}{324}=0.11

The test statistics is given by:

z=\frac{\hat p-p_0}{\sqrt{\frac{p_0(1-p_0)}{n} } }

We substitute to obtain:

z=\frac{0.11-0.1}{\sqrt{\frac{0.1(1-0.1)}{324} } }

This simplifies to:

z=0.6

We need to calculate our p-value.

P(z>0.6)=0.2743

Since this is a two tailed test, we multiply the probability by:

The p-value is 2(0.2723)=0.5486

Since the significance level is less than the p-value, we fail to reject the null hypothesis.

We do not have sufficient evidence to reject the claim that ,the rate of inaccurate orders is equal to​ 10%.

3 0
3 years ago
$3.18 for 12 slices
Sonja [21]

Answer:

divide 3.18 by 12 0.265 per slice

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2 years ago
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What is the solution to the equation?<br> 4(3 + 7) = 4·x+4.7<br> Ox-3<br> Ox=4<br> Ox=7<br> Ox- 10
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Answer:

1

Step-by-step explanation:

1+1=2 :D

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3 years ago
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Please please help me!
sladkih [1.3K]

Answer:

Option 4

Step-by-step explanation:

It has a negative slope of -\frac{1}{5} (move down one and to the right 5)

4 0
3 years ago
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