I need help with questions 72 and 73 The following 13 questions (061 to 073) are

Question

I need help with questions 72 and 73

The following 13 questions (061 to 073) are based on the following example: Patients recovering from an appendix operation normally spend an average of 6.3 d ays i the hospital. The distribution of recovery times is normal with a ? 2.2 days.The trying a new recovery program designed to lessen the time patients spend in the hospital. The first 25 appendix patients in this new program were released from the hospital in an average of n the basis of these data, can the hospi clude that the new program has a 5.5 significant reduction of recovery time. Test at the.01 leyel of significance 061: The appropriate statistical procedure for this example would be a A. z-test B. t-test 062: Is this a oge-tailed or a two-tailed test? AJone-tailed B. two-tailed Based on your evaluation of the null in Q68 and your conclusion is 069, as a researchet you would be more concerned witha 070: A. Type I statistical error ?.yype II statistical error Calculate the 99% confidence interval. Steps: Q71: The mean yousulluse for this calculation is A 5.5 6.3 072: What is the new critical value you will use for this calculation? 273: As you know, two values will be required to complete the fóllowing equation:

Explanation / Answer

Que 72) Here n=25 therefore we can use here t test

Ctitival value = t0.01,(n-1) = t 0.01,24

Critival value = 2.797

Que 73) we have to mu values,

5.5 < mu < 6.3

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