Answer:
p = 0.52392
Step-by-step explanation:
Here we have
p = 23% = 0.23
= 208/800 = 0.26
n = 800
q = 1-p = 0.77
α = 5% = 0.05
Here we have
Z test given by
![z=\frac{\hat{p}-p}{\sqrt{\frac{pq}{n}}}](https://tex.z-dn.net/?f=z%3D%5Cfrac%7B%5Chat%7Bp%7D-p%7D%7B%5Csqrt%7B%5Cfrac%7Bpq%7D%7Bn%7D%7D%7D)
From which we have
From the Cpdf we have Probability = 0.0219, z = 2.016
Therefore from the z score = 0.0683, p = 0.52392 from z table.
B undefined is the correct answer
The answer is 3. I don't know if you want ne to explain or show my work just reply to me.
Answer:
240
Step-by-step explanation:
Since David has 60 fewer storybooks than Huiling, take the total number of storybooks, which is 460 and minus it by 60.
460-60=400
Now, there are 5 units, 5units=400
1unit=80
Since Jenny has 3 times as many storybooks as David, Jenny has 3 units, 3unit=80x3=240
Tip: Draw a model to help you visualise the question better.