Probability of a randomly selected monthly cell phone bill

Reference no: EM1393503

According to a report by Scarborough Research, the average monthly household cellular phone bill is $73. Suppose local monthly household cell phone bills are normally distributed with a standard deviation of $11.35.

a. What is the probability that a randomly selected monthly cell phone bill is more than $100?

b. What is the probability that a randomly selected monthly cell phone bill is between $60 and $83?

c. What is the probability that a randomly selected monthly cell phone bill is between $80 and $90?

d. What is the probability that a randomly selected monthly cell phone bill is no more than $55?

Reference no: EM1393503

Questions Cloud

Evolution of ancestral eukaryotes : Explain why in the evolution of ancestral eukaryotes, might it have been advantageous for separate organisms to become united into a single organism?

Average level of reading ability : A researcher tested the reading ability of two groups of primary care patients. The scores on the test range from 1 to 9 with 9 indicating a high degree of reading ability and 1 very limited reading ability.

What are the advantages of modular programming in rts : What are the advantages of modular programming in RTS and can all the tasks meet their respective deadlines when priority ceiling protocol is used for resource scheduling?

Find consequences of the emergence of species : Suppose if we hire the biological species concept where a population or group of populations within which genes are actually or potentially exchanged by interbreeding.

Probability of a randomly selected monthly cell phone bill : What is the probability that a randomly selected monthly cell phone bill is more than $100?

Relationship between objectives and goals : Critically discuss the difference among strategic, long-term, and short-term objectives? What is the relationship between objectives and goals? What are examples of this relationship?

What are processes and techniques to make the budgeting : What are some processes and techniques that you would suggest to make the budgeting process work well? Start with general but also provide some specifics as relate to creating detailed project budgets. Be sure to justify why you think your recomme..

Examples of descriptive statistics : Critically discuss some examples of descriptive statistics? Why are they used in research? What is a confidence interval?

Question based on classical genetics : Suppose that 2-pigments, red and blue, mix to give the normal wild-type purple color of petunia petals. Separate biochemical pathways synthesize the two pigments.

User Account

All Pages