It is reported that 41% of American households use a cell phone exclusively for their telephone...
It is reported that 41% of American households use a cell phone exclusively for their telephone service. In a sample of eight households,
It is reported that 41% of American households use a cell phone exclusively for their telephone service. In a sample of eight households,
-
Find the probability that no household uses a cell phone as their exclusive telephone service. (Round your answer to 4 decimal places.)
-
Find the probability that exactly five households exclusively use a cell phone for telephone service. (Round your answer to 4 decimal places.)
-
Find the mean number of households exclusively using cell phones. (Round your answer to 2 decimal places.)
Homework Answers
This will be a binomial distribution with parameters:
n = 8, p = 0.41
Hence,
a) P(X = 0)
= (1 - 0.41)8
= 0.598
= 0.0147
b) P(X = 5)
= 0.1332
c) Mean number of households = np = 8(0.41) = 3.28
Add Answer to:
It is reported that
41% of American households use a cell phone exclusively for their
telephone...
5. It is reported that 35% of American households use a cell phone exclusively for their...
5. It is reported that 35% of American households use a cell phone exclusively for their telephone service. If you want to find the probability in a sample of 6 households that at least 3 households exclusively use a cell phone for telephone service, you should approach this question by which of the following probability distributions: Poisson, Uniform, Normal, Binomial, Hypergeometric, and Exponential? The following output is provided by MegaStat when analyzing this question. 6 n 0.35 р cumulative Х...
A study conducted by the pew research Center reported that 57% cell phone owners use their...
A study conducted by the pew research Center reported that 57% cell phone owners use their phones inside a store for guidance on purchasing decisions. A sample of 15 cell phone owners is studied. a) What is the probability that five or more of them use their phones for guidance on purchasing decisions? b) What is the probability that fewer than eight of them use their phones for guidance on purchase decisions? c) What is the probability that exactly 9...
Cell Phone Lifetimes A recent study of the lifetimes of cell phones found the average is...
Cell Phone Lifetimes A recent study of the lifetimes of cell phones found the average is 24.3 months. The standard deviation is 2.6 months. If a company provides its 32 employees with a cell phone, find the probability that the mean lifetime of these phones will be less than 23.7 months. Assume cell phone life is a normally distributed variable, the sample is taken from a large population and the correction factor can be ignored. Round the final answer to...
0.0301 8. The National Health Interview Survey reports that 29% of telephone users no longer use...
0.0301 8. The National Health Interview Survey reports that 29% of telephone users no longer use landlines, and have switched completely to cell phone use. Suppose we take a random sample of 17 telephone users. Find the probability that the sample contains exactly 9 users who have abandoned their landlines. Use the binomial probability formula. Write your answer rounded to three decimal places. (5 points) FORM F /Fall 18
4. As the newly hired manager of a company that provides cell phone service, you want...
4. As the newly hired manager of a company that provides cell phone service, you want to determine the percentage of adults in your state who live in a household with cell phones and no land-line phones. How many adults must you survey? Assume that you want to be 90% confident that the sample percentage is within three percentage points of the true population percentage. Use STATCRUNCH to calculate the following Sample Size. a. Assume that nothing is known about...
39.4% of US homes continue to use a landline in addition to cell phone service. 3...
39.4% of US homes continue to use a landline in addition to cell phone service. 3 US homes are randomly selected. What is the probability that at least one of the 3 continues to use a landline? Round your answer to 4 decimal places.
J UULUTUSUIDS_URGJUFIObmltV3... What should I buy? A study conducted by a research group in a recent...
J UULUTUSUIDS_URGJUFIObmltV3... What should I buy? A study conducted by a research group in a recent year reported that 58% of cell phone owners used their phones inside a store for guidance on purchasing decisions. A sample of 15 cell phone owners is studied. Round the answers to four decimal places. Part 1 of 4 (a) What is the probability that seven or more of them used their phones for guidance on purchasing decisions? The probability that seven or more...
A budgeting Web site reported that 35% of U.S. households have withdrawn money from a 401(k)...
A budgeting Web site reported that 35% of U.S. households have withdrawn money from a 401(k) or other retirement account for needs other than retirement in 2013. A random sample of 11 U.S. households was selected. Complete parts a through e below. a. What is the probability that exactly four households withdrew funds from a retirement account for needs other than retirement? The probability is . 2428. (Round to four decimal places as needed.) b. What is the probability that...
At a price of $200, a cell phone company manufactures 200000 phones. At a price of...
At a price of $200, a cell phone company manufactures 200000
phones. At a price of $300, the company produces 400000
phones.
What is the price elasticity of supply? (Round your answer to
two decimal places.)
7th attempt See Hint At a price of $200, a cell phone company manufactures 200000 phones. At a price of $300, the company produces 400000 phones What is the price elasticity of supply? (Round your answer to two decimal places.)
In what follows, please round all probabilities to four decimal places. 1. The proportion of Canadian...
In what follows, please round all probabilities to four decimal places. 1. The proportion of Canadian households that rely only on cellphones for communications instead of landline phones was estimated at 4.8% by a Statistics Canada residential telephone service survey. Suppose that 15 Canadian households are randomly selected. Let X be the number of Canadian households that rely only on cellphones for communications instead of landline phones among the selected 15 households. (a) (4 points) Find the probability that exactly...
5. It is reported that 35% of American households use a cell phone exclusively for their telephone service. If you want to find the probability in a sample of 6 households that at least 3 households exclusively use a cell phone for telephone service, you should approach this question by which of the following probability distributions: Poisson, Uniform, Normal, Binomial, Hypergeometric, and Exponential? The following output is provided by MegaStat when analyzing this question. 6 n 0.35 р cumulative Х...
0.0301 8. The National Health Interview Survey reports that 29% of telephone users no longer use landlines, and have switched completely to cell phone use. Suppose we take a random sample of 17 telephone users. Find the probability that the sample contains exactly 9 users who have abandoned their landlines. Use the binomial probability formula. Write your answer rounded to three decimal places. (5 points) FORM F /Fall 18
4. As the newly hired manager of a company that provides cell phone service, you want to determine the percentage of adults in your state who live in a household with cell phones and no land-line phones. How many adults must you survey? Assume that you want to be 90% confident that the sample percentage is within three percentage points of the true population percentage. Use STATCRUNCH to calculate the following Sample Size. a. Assume that nothing is known about...
J UULUTUSUIDS_URGJUFIObmltV3... What should I buy? A study conducted by a research group in a recent year reported that 58% of cell phone owners used their phones inside a store for guidance on purchasing decisions. A sample of 15 cell phone owners is studied. Round the answers to four decimal places. Part 1 of 4 (a) What is the probability that seven or more of them used their phones for guidance on purchasing decisions? The probability that seven or more...
At a price of $200, a cell phone company manufactures 200000
phones. At a price of $300, the company produces 400000
phones.
What is the price elasticity of supply? (Round your answer to
two decimal places.)
7th attempt See Hint At a price of $200, a cell phone company manufactures 200000 phones. At a price of $300, the company produces 400000 phones What is the price elasticity of supply? (Round your answer to two decimal places.)
In what follows, please round all probabilities to four decimal places. 1. The proportion of Canadian households that rely only on cellphones for communications instead of landline phones was estimated at 4.8% by a Statistics Canada residential telephone service survey. Suppose that 15 Canadian households are randomly selected. Let X be the number of Canadian households that rely only on cellphones for communications instead of landline phones among the selected 15 households. (a) (4 points) Find the probability that exactly...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago