1) When conducting a hypothesis test about a single mean, at a given level of si
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Question
1) When conducting a hypothesis test about a single mean, at a given level of significance, as the sample size n increases, the power of the test: A) Will decrease. B) Will increase. C) May increase or decrease D) Remains the same 2) When conducting a hypothesis test about a single mean, at a given level of significance, as the sample size n increases, the probability of a Type II error: A) Will decrease. B) Will increase. C) May increase or decrease D) Remains the same 3) The average customer waiting time at a fast food restaurant has been 7.5 minutes. The customer waiting time has a normal distribution. The manager claims that the use of a new system will decrease average customer waiting time in the store. What is the null and alternative hypothesis for this scenario? A) H0: ? = 7.5 and HA ? 7.5 B) H0: ? ? 7.5 and HA > 7.5 C) H0: ? ? 7.5 and HA < 7.5 D) H0: ? > 7.5 and HA ? 7.5 E) H0: ? > 7.5 and HA ? 7.5 4)A random sample of 12 customer transactions has been recorded. At a significance level of .05, what is the rejection point condition? We would reject the null hypothesis if: A) Z < -1.645 B) Z > 1.645 C) t > 1.796 D) t < -1.796 E) t < -1.782Explanation / Answer
1)B) Will increase. 2)D) Remains the same 3)A) H0: ? = 7.5 and HA ? 7.5 4)B) Z > 1.645
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