Question

In: Statistics and Probability

QQQ3 When large samples (np > 5 and n(1 - p) > 5) are associated with...

QQQ3

When large samples (np > 5 and n(1 - p) > 5) are associated with hypothesis tests for a single population proportion, then the associated test statistic will be is a z-score. True or false?

QQQ7

In the P-value approach to hypothesis testing, if the P-value is less than a specified significance level, then we fail to reject the proposed null hypothesis.

QQQ10

A Type I error is the error made in failing to reject an incorrect null hypothesis. True or false?

QQQ12

In the classical approach to hypothesis testing, the calculated test statistic value is compared to the

Select the best answer.

level of significance.

critical value.

standard error.

parameter or parameters being tested.

QQQ15

The distribution of the sample proportions from a single population will be approximately normally distributed provided that the sample size is large enough (np > 5 and n(1 - p) >5). True or false?

QQQ

Expert Solution

ANSWERS:

Ques.3) When large samples (np > 5 and n(1 - p) > 5) are associated with hypothesis tests for a single population proportion, then the associated test statistic will be is a z-score. ------- TRUE

Ques.7) In the P-value approach to hypothesis testing, if the P-value is less than a specified significance level, then we fail to reject the proposed null hypothesis. ---------- FALSE. (If the p-value is less than the significance level, we reject the null hypothesis.)

Ques.10) A Type I error is the error made in failing to reject an incorrect null hypothesis.------FALSE (Type I error is when we reject the true null hypothesis.)

Ques.12) In the classical approach to hypothesis testing, the calculated test statistic value is compared to the
Ans.) critical value.

Ques.15.)The distribution of the sample proportions from a single population will be approximately normally distributed provided that the sample size is large enough (np > 5 and n(1 - p) >5). ----- TRUE

orchestra answered 1 year ago

If np ≥5 and nq ≥5, estimate P (at least 7) with n =13 and p=0.6...

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Let X be a Bin(n, p) random variable. Show that Var(X) = np(1 − p). Hint:...

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Consider the np-chart for n=50, LCL=1.515, and UCL=18.485. Derive the β-risk as a function of p...

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n = 5 p or π = 0.15 P(X<2) =