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Free_Kalibri [48]
3 years ago
8

www.carnegielearning.com if someone can do my assignments on here . ill pay you for the work you do using paypal.

Mathematics
1 answer:
vichka [17]3 years ago
4 0

Answer:

Cant do this because we dont have your username and password and the link you gave us isnt signed into your account sorry


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Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 6.8 parts
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Answer:

The test statistics fall in the critical region and hence null hypothesis is to be rejected.

Step-by-step explanation:

The null hypothesis : H0 : Mean = 6.80  

Alternative hypothesis: Ha: Mean is not equal to 6.80

As per the z statistics  

z = (x’-mean)/(sigma/sqrt n)

Substituting the given values, we get –  

z = 6.4-6.8/(1.1/sqrt 10)

z = -1.149

z test statistics is -1.149

Critical value for two tailed test at 98% confidence is .10749

The test statistics fall in the critical region and hence null hypothesis is to be rejected.

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