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.
Sqrt 169=13 ;sqrt 225=15 thus the answer is;
13/15
Answer:
0 votes
Answer:27000Step-by-step explanation:interest= principal×rate×time÷ 100=270000×5×2÷100=27000
14. y=x^2 + 3
15. substitute the numbers from the table into each equation
16. All real numbers
Step-by-step explanation:
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