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scoundrel [369]
2 years ago
5

Use multiplication to solve the following problems.

Mathematics
1 answer:
katrin2010 [14]2 years ago
8 0

Answer:

18) is 18

19) is 15

20) is 17/3

21) is 36

22) is 9/8

23) is 10

24) is 15

25) is 25/3

26) is 9/4

Step-by-step explanation:

im late sorry

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In a study of the accuracy of fast food​ drive-through orders, one restaurant had orders that were not accurate among orders obs
Lesechka [4]

Complete Question

In a study of the accuracy of fast food drive-through orders, one restaurant had 32 orders that were not accurate among 367 orders observed. Use a 0.05 significance level to test the claim that the rate of inaccurate orders is equal to 10%. Does the accuracy rate appear to be acceptable?

Answer:

The decision rule  is

  Fail to reject the null hypothesis

The conclusion is  

  There is sufficient evidence to show that the rate of inaccurate orders is equal to​ 10%

Step-by-step explanation:

Generally from the question we are told that

   The sample size is  n =  367

    The number of orders that were not accurate is  k = 32

    The population proportion for rate of inaccurate orders is  p = 0.10

The null hypothesis is  H_o :  p = 0.10

The alternative hypothesis is  H_a :  p \ne 0.10

Generally the sample proportion is mathematically represented as  

         \^ p = \frac{k}{n}

=>      \^ p = \frac{32}{367}

=>      \^ p = 0.0872

Generally the test statistics is mathematically represented as

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

=>      z= \frac{ 0.0872  - 0.10 }{ \sqrt{ \frac{ 0.10 (1 - 0.10 )}{367} } }  

=>      z= -0.8174

From the z table  the area under the normal curve to the left corresponding to  -0.8174 is  

         P(z <  -0.8173 )  = 0.20688

Generally the p-value is mathematically represented as

         p- value =  2 *  0.20688

=>      p- value =  0.4138

From the value obtained we see that  p-value >  \alpha hence

The decision rule  is

  Fail to reject the null hypothesis

The conclusion is  

  There is sufficient evidence to show that the rate of inaccurate orders is equal to​ 10%

 

4 0
2 years ago
Which correctly describes a cross section of the right rectangular prism if the base is a rectangle measuring 15 inches by 8 inc
weeeeeb [17]

Answer: 2,3, and the last one.... I think

Step-by-step explanation:

7 0
2 years ago
A rancher with 420420 meters of fence intends to enclose a rectangular region along a river​ (which serves as a natural boundary
Kobotan [32]
Perimeter of Rectangle: 2W + 2L
One L is the river so we have 3 sides
420m/3 = 140m

Area of Rectangle is WL
140×140= 19,600 Sq meters

I'm assuming you may have another mathematical system the teacher wants you to use. Yet, I get Area is 19,600 Sq meters
4 0
3 years ago
kai pixked 11 times as many blueberries as nico. . together they picked 936. hiw many blueberries did each boy pick?
Masja [62]
N = how many blueberries Nico picked
11n = how many blueberries Kai picked

11n + n = 936
12n = 936
n = 78

11 (78) = 858 blueberries

Nico picked 78 and Kai picked 858
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Length = 3cm
Volume = length x width x height
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