In a certain book, the frequency distribution for the number of words per page may be taken as approximately normal with mean 800 and standard deviation 50. If 3 pages are chosen at random, what is the probability that none of them has between 830 and 845 words each?

Q: In 2015, the mean return of all common stocks on the Philippine stock exchange was 3.5% . The…

A: The central limit theorem (CLT) states that, the mean of the sampling distribution is approximately…

Q: Suppose that in a certain Senior High School the average height of male students is 155.9 cm with…

A: GivenMean(μ)=155.9standard deviation(σ)=20.4sample size(n)=40

Q: The average age of accountants is 53 years, with a standard deviation of 5 years. If an accounting…

A: We have to find probability..

Q: In a certain long document, there is an average of 0.3 typographical errors per 100 words of text.…

A:

Q: Suppose the scores on a statistics exam follow a normal distribution with a mean of 70 and a…

A: GivenMean(μ)=70standard deviation(σ)=10

Q: he distribution of heights of adult males has a mean of 69 inches and a standard deviation of 4…

A: Solution-: Let, X= The distribution of heights of adult males Given: (inches) We find, P[ he…

Q: In 1999, the murder rates (per 100000) for the 50 states and the District of Columbia had a mean of…

A: Given mean is 5.9 and standard deviation 6.3 sample size is 5

Q: The average public high school has 468 students with a standard deviation of 87. If a public school…

A: Given, mean=μ=468 and standard deviation=σ=87.

Q: population has a mean of 350 and a standard deviation of 25, determine the probability that a random…

A: GIVEN DATA, μ=350σ=25n=40p(335<x¯<375)=?

Q: Suppose the life spans of a particular brand of car battery are normally distributed with a mean of…

A: Given that  Mean=44.7 P(X>53.7)=0.26

Q: A particular telephone number is used to receive both voice calls and fax messages. Suppose that 25%…

A: Note: Since you have posted multiple question, we will solve the first question for you. If you want…

Q: Suppose the scores, on a college entrance examination are normally distributed with a mean of 1000…

A: We have given that Suppose the scores, on a college entrance examination are normally distributed…

Q: In 1999, the murder rates (per 100,000) for the 50 states and the District of Columbia had a mean of…

A:

Q: Suppose the life spans of a particular brand of car battery are normally distributed with a mean of…

A: We have given that  Mean=45.3

Q: High school girls average 80 text messages daily. Assume the population standard deviation is 15…

A: Given information:

Q: A population has a mean of 80 and a standard deviation of 7.A sample of 49 observation will be…

A:

Q: A fair die is rolled 100 times and the frequency of each point occurring on the die is recorded.…

A: We first create a frequency distribution. Outcomes (X) X2 Frequency (fi) X2fi 1 1 15 15 2 4 8…

Q: The population mean is 20 inches and population standard deviation is 4 inches. A random sample of…

A: mean = 20 s =4

Q: Provide an appropriate response. 11) The probability that a tennis set will go to a tiebreaker is…

A: Suppose a random variable x, defines the number of tiebreakers in tennis set.It is given the…

Q: A detergent company finds that a family in the country washes an average of 910 kilograms of clothes…

A: We have given that,  Let X be the random variable from normal distribution with mean (x̄) = 910 and…

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: We are given,μ = 196σ = 22n = 60

Q: A banks loan officer rates application for credit. The ratings are normally distributed with a mean…

A:

Q: A detergent company finds that a family in the country washes an average of 910 kilograms of clothes…

A: Given that: X is normal Distributed with mean µ = 910.0 and standard deviation σ = 85.0 By using…

Q: In the Chapter Problem, we noted that the safe load for a water taxi was found to be 3500 pounds. We…

A: Solution: Let X be the weight of the men. From the given information, X follows normal distribution…

Q: Suppose that the amount of time that students spend studying in the library in one sitting is…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: A final exam in Science 150  has a mean of 80 with a standard deviation of 8. If 25 students are…

A: Given: μ = 80 σ = 8 n = 25

Q: Suppose it is known that the mean and the standard deviation for a given population are 65 ar 8,…

A:

Q: If the gondola is filled with 25 randomly selected​ skiers, what is the probability that their mean…

A: Mean = 180 Standard deviation = 44 Sample size = 25

Q: Among the students of AUCA, 30% know two foreign languages. Find the mean and the standard deviation…

A:

Q: University students' blood pressure can be expected to follow a normal distribution with a mean of…

A: Given data,μ=85σ=20If n=4P(X<90)=?

Q: The quality control manager at a computer manufacturing company believes that the mean life of a…

A: let  denotes the mean lifetime of computersThis follows the normal…

Q: Suppose the scores, x, on a college entrance examination are normally distributed with a mean of…

A: Solution: Let X be the score on a college entrance examination. From the given information, X…

Q: Suppose the scores, X, on a college entrance examination are normally distributed with a mean of…

A:

Q: Suppose a population distribution has a mean  = 150 and a standard deviation s = 30, and you draw a…

A: Given: Mean = μ = 150 Standard deviation = σ = 30 n = 100

Q: At their​ inauguration, the ages of the first six​ (out of a current number of​ 45) presidents of a…

A: First we will find the sample standard deviation the steps are as follows1) Step 1: Find the mean of…