A manufacturer of a hair dye markets its color as lasting, on average, 200 washes without fading. A consumer group decides to re-test this claim by assessing the number of times that 30 women can wash their hair without the color fading and finds the average is 200.05 washes, with a standard deviation of 1.5.

The resulting p-value is .82588; thus, the null hypothesis is not rejected. The consumer group concludes that the manufacturer’s claim that its hair color lasts, on average, 200 washes is accurate.

What type of error is possible in this situation?