2 years ago

I really need help with this

1 answer:

8 0

Answer is 62 x=62 when u do 2x+6=130

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GuDViN [60]

I have no idea my brother just skip it

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3 years ago

Dmitrij [34]

Answer: The value of test statistic is 2.442.

Step-by-step explanation:

Since we have given that

n = 238

Sample mean = 23.2 minutes

Standard deviation = 20.26 minutes

Hypothesis :

$H_0:\mu=20\\H_a:\mu\neq 20$

So, the test statistic value would be

$z=\dfrac{\bar{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\z=\dfrac{23.2-20}{\dfrac{20.26}{\sqrt{236}}}\\\\z=2.442$

Hence, the value of test statistic is 2.442.

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3 years ago

stealth61 [152]

Answer:

Step-by-step explanation:

7 0

3 years ago

dimulka [17.4K]

1. Money

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hope this helped

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3 years ago

Wewaii [24]

Answer:

1/8miles a second it's easy I'm good at mathematics

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2 years ago