You decide to test how accurate a certain tv station's weatherman is with his predictions. over the course of several months, you note that there were 40 days where the weatherman said that there was a 60% chance of rain. it subsequently rained on 21 of those days. evaluate the weathermans forecasting ability on the basis of this data the p-value of the hypothesis test is:

0.483

Step-by-step explanation:

Given that you decide to test how accurate a certain TV station's weatherman is with his predictions.

No of days = 40

weatherman prediction of proportion= 0.60

Observed proportion =

p difference = -0.075

(Two tailed test)

Assuming H0 to be true, std error =

Test statistic Z = p difference/std error

= -0.7016

p value = 0.483

answer: standard form is ax^2 + bx + c = 0

step-by-step explanation:

standard form is ax^2 + bx + c = 0

(2x + 1)(x - 2) = 0

distribute to get into standard form

2x^2 - 4x + x - 2 = 0

2x^2 - 3x - 2 = 0

a = 2, b= -3, c = -2

a is your answer

360/29

step-by-step explanation: