b In the context of this situation, interpret making a Type I error; inte THE BA

Question

b In the context of this situation, interpret making a Type I error; inte THE BANK CUSTOMER WAITING TIME CASEWaitTime Recall that a b waiting for teller s waiting times from the current 9 to 10 minutes to less than 6 minutes. ank manager has developed a new system to reduce the time customers spend ervice during peak hours. The manager hopes the new system will reduce Suppose the manager wishes to use the 100 waiting times to support the claim that the mean waiting time under the new system is shorter than six minutes. a Letting represent the mean waiting time under the new system, set up the null and alternative hypothese shorter than six minutes eded if we wish to attempt to provide evidence supporting the claim that is s ne b In the context of this situation, interpret making a Type I error:; interpret making a Type l error An automobile parts supplier owns a machine that produces a cylindrical engine part. This part is supposed to have an outside diameter of three inches. Parts with diameters that are too small or 5

Explanation / Answer

sOLUTIONa:

Null hypothesis:

H0:=6 minutes

Alternative Hypothesis:

H1:<6 minutes

alternative HYpothesis is claim

SOlutionb:

Reject Ho when Ho is true is type 1 error.

We accept H0 which in fact,whenin fact H0 is not true which is type 2 error

probability of Type 1 error=alpha=level of significance

A type 2 error can occur if the null hypothesis is false called beta error.

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