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Reil [10]
2 years ago
11

Need help with this

Mathematics
1 answer:
maksim [4K]2 years ago
4 0

Answer:3x =16 is the required equation.

Step-by-step explanation: 3*x = 16

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Question
AlekseyPX

Answer:

The population mean is 5 volts

Step-by-step explanation:

Output voltage is assumed to be normally distributed, with standard deviation 0.25 Volts

s=0.25

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H_0:\mu = 5\\H_a:\mu \neq 5

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Since n < 30 and population standard deviation is unknown

So, we will use t test

Formula : t = \frac{x-\mu}{\frac{s}{\sqrt{n}}}

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t=-1.69

Refer the t table for p value

Degree of freedom = n-1 = 8-1 = 7

So,t_{(df,\alpha)}=t_{7,0.05}=2.365

P value >α

So, We are failed to reject null hypothesis

Hence The population mean is 5 volts

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There are 20 skittles in a package and 8 are purple. What percentage of skittles are purple?
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Answer:

20-8=12

12-purple skittles

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