In a survey of 155 senior executives, 47.1% said that the most common job interv

Question

In a survey of 155 senior executives, 47.1% said that the most common job interview mistake is to have little or no knowledge of the company. Test the claim that in the population of all senior executives, 45% say that the most common job interview mistake is to have little or no knowledge of the company. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P value method. Use the normal distribution as an approximation of the binomial distribution. Identify the null and alternative hypotheses. Choose the correct answer below. The tot statistic is is z = (Round to two decimal places as needed.) The P-value is . (Round lo four decimal places as needed.) Identify the conclusion about the null hypothesis and the final conclusion that addresses the original claim. (Assume a 0.05 significance level.)

Explanation / Answer

1.) H0 : p = 0.45

H1 : p 0.45

2.) z = (p - p0)/ p0(1-p0)/n

p = 0.471

p0 = 0.45

n = 155

z = (0.471 - 0.45) / (0.45*0.55)/155

= 0.52

3.) P-value = 0.5992

4.) 0.5992 > 0.05

Hence, we accpet null hypothesis and there is not a sufficient evidence to warrant a rejection.......

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