Question

What is the probability that a random sample of 1414 second grade students from the city results in a mean reading rate of more than 9292 words per​ minute?

Answer 1

Answer with explanation:

Number of second grade students who are considered for sample =1414

Number of words that is being read in a Minute = 9292 words per minute

If number of students will be more than half of 1414, that is if, they can read or their reading rate is more than 9292 words per​ minute, then we can say that the sample chosen is Appropriate.

⇒Required Probability,that sample of 1414 students can read  9292 words per​ minute

                   $=\frac{707+x}{1414} \text{Where }, [1 \leq x\leq 707]$