Find confidence interval for mean number of lightning strike

Reference no: EM131430828

Physical Sciences

According to the U.S. National Weather Service, at any given moment of any day, approximately 2000 thunderstorms are occurring worldwide. Many of these storms include lightning strikes. Sensitive electronic equipment is used to record the number of lightning strikes worldwide every day. Twelve days were selected at random, and the number of lightning strikes on each day was recorded. The sample mean was x^‾ = 8.6 million. Assume the distribution of the number of lightning strikes per day is normal with σ = 0.35 million.

a. Find a 99% confidence interval for the mean number of lightning strikes per day worldwide.

b. Do you think the normality assumption in this problem is reasonable? Why or why not?

Reference no: EM131430828

Questions Cloud

Find confidence interval for true mean carbon emission : The carbon emission for the A380 is 80 g CO2 per seat-km. Is there any evidence to suggest that the mean carbon emission for the 747-8 is lower than that of the A380? Justify your answer.

Thyroid gland produces low levels of thyroid hormone : If a person has hypothyroidism, the thyroid gland produces low levels of thyroid hormone. Will a person with hypothyroidism tend to lose weight or gain weight? Explain your answer.

Should the town stress greater safety : If there is evidence to suggest that the true mean thickness is greater than 1 8 inch, the town will embark on an extensive safety program. Using the interval constructed in part (a), should the town stress greater safety? Justify your answer.

Functions for complex organisms : Explain "In an animal's body, tissues are a collection of cells having small roles that contribute to a much larger level of organization. This collectively provides many functions for complex organisms.

Find confidence interval for mean number of lightning strike : Find a 99% confidence interval for the mean number of lightning strikes per day worldwide.- Do you think the normality assumption in this problem is reasonable? Why or why not?

Why do the authors reject as valid the static : Why do the authors reject as valid the static, transformation, and separate types hypotheses for the origins of life and the diversity of life forms we see today?

Draw two production possibilities curves : Economy A produces more capital goods and fewer consumer goods than Economy B. Which economy will grow more rapidly? Draw two production possibilities curves, one for Economy A and one for Economy B. Demonstrate graphically how one economy can gro..

Suggest that true mean brightness is less than 800 lumens : Find a 95% confidence interval for the true mean brightness for the 60-watt warm white bulb. In this case, is there any evidence to suggest that the true mean brightness is less than 800 lumens? Justify your answer.

Develop a clear main point about your topic that is original : Establish and develop a clear main point about your topic that is original and insightful. Address either a cause or effect of the change or controversy you are addressing, without taking a position or writing to persuade.

User Account

All Pages