During an angiogram heart problems can be examined via a sma

During an angiogram, heart problems can be examined via a small tube (a catheter) threaded into the heart from a vein in the patient

Solution

Type 1 Error occurs when the null hypothesis is rejected when in actuality is should not be rejected.

Hence in our context null hypothesis is H0: mu = 2.00 m.

If say alpha level sign is adopted, then if p value < alpha only we must reject null hypothesis.

For some fluctuation in the sampling or mistake in calculations or due to any other reason the null hypothesis is rejected even though null hypothesis was right then type I error occurs.

Here if they stop the manufacturing process by rejecting null hypothesis wrongly even though it was true, means we say type I error occurred.

EVen though the diameter was 2.00 m the sample was rejected then type I error occurred