Question

For each of the following descriptions of an experiment, state the: f) Null hypothesis g) Alternative hypothesis h) Independent variable(s) i) Dependent variable(s) j) The control treatment 2. To determine the impact of herbicide exposure on frog tadpole development, scientists added the chemical glyphosphate to 50 tadpole tanks at a concentration of 5 mg glyphosate dissolved in 100 ml of distilled water. To a second set of 50 tadpole tanks, the scientists added 100 ml of distilled water. Following these additions, scientists monitored the tadpole development by measuring body length, eye diameter, and swimming rate. 10 3

Answer 1

Solution:-

2)

f)

Null hypothesis: u_{1 Body length} = u _{2 Body length}

Null hypothesis: u_{1 Eye diameter} = u _{2 Eye diameter}

Null hypothesis: u_{1Swimming rate} = u_{2Swimming rate}

g)

Alternative hypothesis: u_{1 Body length}$\neq$ u _{2 Body length}

Alternative hypothesis: _{Eye diameter}$\neq$ u _{2 Eye diameter}

Alternative hypothesis: u_{1Swimming rate}$\neq$ u_{2Swimming rate}

h) 5 mg glyphospate dissolved in 100 ml of distilled water are dependable variable.

i) Body length, Eye diameter and swimming rate are dependable variable.

j) 5 mg glyphospate dissolved in 100 ml of distilled water is control treatment.