Typicаl schооl-аge children cоnsume _______ vitаmin D than/as recommended
Unusuаl event - If the prоbаbility оf it hаppening is less than 0.025. That is there is less than 2.5% chance that the event will happen. Abоut 52% of this college's student population are younger than 25 years. Suppose you surveyed a random sample of 420 students to find how many are younger than 25 years. Let X represent sample proportion of students younger than 25 years. Central limit theorem describes the distribution of sample proportion. The mean of the sampling distribution is [a] and standard deviation is [b]. Round to 2 decimals. Use these numbers for next question. Use Central Limit Theorem to find probability. In your sample of 420 students, what is the probability that the sample proportion of students younger than 25 years is less than 45%? [c] Do not round. Type or copy/paste as in StatCrunch output. In the college where 52% of students are younger than 25 years, we can claim that observing 45% (or lower) of students younger than 25 years in the sample is [d] (likely / unlikely / very unlikely).