Need help with these 3! Thank you When performing a hypothesis test to determine

Question

Need help with these 3! Thank you When performing a hypothesis test to determine correlation the Null Hypothesis is always equal to zero, meaning that until proven otherwise we assume there is no correlation. True False The level of significance that determines the area of the critical region for a hypothesis test, should be chosen before the statistical test findings are evaluated, as to not allow biasing of the test results by the individuals conducting the hypothesis test. True False The standard error of the estimate is the standard deviation of observed x-values about the predicted x' values.. True False

Explanation / Answer

Question 4 :

yes, in null hypotheisi we always maintain a concomitant attitude.

so, 'True'

question 5 :

It depends on how fatal is rejecting null hypthesis wrongly.
So, we choose it based on our physical probem. It has nothing to do with the sample. so, it should be chosen beforehand

question6:

No, this is False.
if the estimate is unbiased then, it'd be true.
Standard error is mean of squared deviations from actual parameter value to observed estimate.

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