Binomial distribution – Critical values ​​/ Critical region: Statistics and mechanics Edexcel Year 1 AS: p.104 Ex.7B Q5.

Question as in title

Answer on page 221 on the back of the book

I do not agree with the answer they give.

P (X = 0) = 0.0188 …> 0.01 = 1%. Let's go back to the definition of "critical region" and compare to the example of page 101/102 (which I will not publish here for the sake of brevity):

enter the description of the image here

Now, it would be "surprising / unlikely" to get 0 success considering X ~ B (20.0.18). However, 1.88% is not "less than 1% (not) likely", and so if we performed these 20 tests and achieved 0 successes, it is certain that we would not reject the null hypothesis at the 1% significance level.

Am I right or is there a flaw in my reasoning?

Thank you in advance.

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How to change the time zone and the year with PYTHON datetime?

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2033-07-12 20:28:30 # GMT / UTF-4
import datetime, pathlib

def create (data):
"" "creates an output file based on the current directory" ""
# another line is added in the same text as if it has the same path
# (pathlib is used because of its effectiveness compared to bone)
data_filename = pathlib.Path (__ file __). with_name ("record_cars_data.txt")
with open (data_filename, "a") as file_handle:
file_handle.write (data)

now = datetime.datetime.now ()
create (now.strftime ("% Y-% m-% d% H:% M:% S"))

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