The mean number of words per minute (WPM) read by sixth graders is 86 with a variance of 225. If 44 sixth graders are randomly s
1 answer:
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Answer:
The correct answer to the following question will be "384".
Step-by-step explanation:
We are having,
On solving, we get
⇒
⇒
On applying cross-multiplication, we get
⇒
⇒
⇒ ...(equation 1)
When "p" seems to be the population proportion, (equation 1) approach, which is special
∴
On putting the values in the above expression, we get
⇒
⇒
⇒
⇒