Finding Expected Frequencies In Exercises 3–6, find the expected frequency for the values of n and pᵢ. n=230, pᵢ=0.25

Hello, everyone. Let's take a look at this question together. Calculate the expected frequency when N equals 180 and P sub I equals 0.4. Is it answer choice A 75, answer choice B 60, answer choice C 68, or answer choice D 72? So in order to solve this question, we have to recall how to calculate the expected frequency so that we can determine the expected frequency when N equals 180 and piece of I equals 0.4. And we can recall that we have to use The formula for expected frequency, which is equal ton multiplied by Pi, so then we substitute the values that we are given into the formula, giving us 180 multiplied by 0.4, which is equal to 72. Therefore, the expected frequency is 72, which makes answer choice D the correct answer, and all other answer choices are incorrect. I hope you found this video to be helpful. Thank you and goodbye.