In an all boys school, the height of the student body are normally distributed with a mean of 69 inches and a standard deviation
of 5 inches. using the empirical rule, what percentage of the boys are between 54 and 84 inches tall?
1 answer:
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Answer:
B
Step-by-step explanation:
- A 95% confidence level interval will have 0.52 (lower interval) & 0.68 (upper interval) which means that that if 90 individuals root for North HS then p value is 0.6 which will fall in the 95% confidence interval range.
- For the option B the p value will also be same as in case A hence B is true as an alternative hypothesis.
- We can calculate P value
Confidence Interval = p ± z