Describe a Type I error for this test. A. Concluding that the average level of mercury uptake in wading birds in a region today is equal to 16 parts per million, when in fact, the average level of mercury uptake in wading birds in a region today is lessless than 16 parts per million.
B. Concluding that the average level of mercury uptake in wading birds in a region today is moremore than 16 parts per million, when in fact, the average level of mercury uptake in wading birds in a region today is equal to 16 parts per million.
C. Concluding that the average level of mercury uptake in wading birds in a region today is lessless than 16 parts per million, when in fact, the average level of mercury uptake in wading birds in a region today is equal to 16 parts per million.

The correct option is (C).

Step-by-step explanation:

Missing information:

According to a university of wildlife ecology and conservation researcher, the average level of mercury uptake in wading birds in a region has declined over the past several years. Five years ago, the average level was 16 parts per million. Give the null and alternative hypotheses for testing whether the average level today is less than 16 ppm.

The hypothesis can be defined as follows:

H₀: The average level of mercury uptake in wading birds in a region is 16 ppm, i.e. μ = 16.

Hₐ: The average level of mercury uptake in wading birds in a region is less than 16 ppm, i.e. μ < 16.

A Type I error is the rejection of a null hypothesis (H₀) when indeed the null hypothesis is true. It is symbolized by α.

In this case the type I error can be defined as:

Concluding that the average level of mercury uptake in wading birds in a region today is less than 16 parts per million, when in fact, the average level of mercury uptake in wading birds in a region today is equal to 16 parts per million.

The correct option is (C).

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

25% is the answer