Using specific data, we find a significant difference in the proportion of fruit flies surviving after13

days between those eating organic potatoes and those eating conventional (not organic) potatoes. This exercise asks you to conduct a hypothesis test using additional data. In this case, we are testing

H0:po=pc

Ha:po>po

wherepo andpc represent the proportion of fruit flies alive at the end of the given time frame of those eating organic food and those eating conventional food, respectively. Use a5%significance level.

Effect of Organic Soybeans After 5 Days

After5

days, the proportion of fruit flies eating organic soybeans still alive is0.89

, while the proportion still alive eating conventional soybeans is0.84

. The standard error for the difference in proportions is0.022

.

What is the value of the test statistic?

Round your answer to two decimal places.

z= ______

What is thep

-value?

Round your answer to three decimal places.

p-value= ______