Suppose all items from an assembly line are independent and that the probability of any item being defective is 0.1 for all items. If you sample a bunch of items and the standard deviation for the number of defectives is 6, how many items are you sampling?

Q: In a certain book, the frequency distribution for the number of words per page may be taken as…

A:

Q: 2. We are given that the average height for women in America is 64 inches tall with a standard…

A: We have given that the random variable X i.e. height of the women. The Mean μ = 64 inches, standard…

Q: A study of the amount of time it takes a mechanic to rebuild the transmission for a 2010…

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Q: There are 250 dogs at a dog show that weigh an average of 12 pounds, with a deviation of 8 pounds.…

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Q: Compute the standard deviation of sample taking if the size of a sample is 200 and the proportion on…

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Q: A manufacturer knows that their items have a normally distributed length, with a mean of 15.4…

A: We have to find the probability that their mean length is less than 15.9 inches...

Q: According to the Nielsen Company, the mean number of TV sets in a US household in 2013 was 2.24.…

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Q: There are many firms that belong to the same industry. It is known that there are in average 74…

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Q: The average weight of an NFL player is 245.7 pounds with a standard deviation of 34.5 pounds, but…

A: From the provided information, Mean (µ) = 245.7 Standard deviation (σ) = 34.5

Q: The buffet has an average wait line of 45 minutes, with a standard deviation of 15 minutes. If we…

A: Given Data Population Mean,μ = 45.0 Population Standard Deviation,σ = 15.0

Q: A manufacturer knows that their items have a lengths that are skewed right, with a mean of 6.1…

A: Given: Length of items = X X distribution is skewed towards right mean of X= 6.1 inches standard…

Q: Suppose you draw a random sample of 100 observations from a population with a variance = 25. What is…

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Q: According to the study, the average number of hours that the student spent studying per week in the…

A: From the provided information, Mean (µ) = 56 hours Standard deviation (σ) = 14 hours X~N (56, 14)

Q: The average age of all employees is 25 years, and the standard deviation of the ages of all…

A: Given,sample size(n)=100mean(μ)=25standard deviation(σ)=3

Q: A researcher wishes to estimate the average height of men for a certain region of the country. If…

A: Probability is the measure determine the likelihood of an event. Event is the outcome of an…

Q: If the average of a random variable is 95 and the standard deviation is 20 then the proportion of…

A: Let X denotes the random variable with mean μ = 95 and SD σ = 20. Let the proportion of observations…

Q: the life expectancy of 400 people in a certain geographic region, the mean age at death was 70…

A: Given, μ=70σ=5.1n=50

Q: Suppose in a certain primary school, the weight of boys are normally distributed with mean 28kg and…

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Q: A manufacturer knows that their items have a normally distributed length, with a mean of 13.9…

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Q: A manufacturer knows that their items have a normally distributed length, with a mean of 17.7…

A: consider the test statistics z=x-μσn where μ is the mean, σ is the standard deviation, n is the…

Q: The distribution of heights for women in the United States is approximately normal, with a mean of μ…

A: Where,

Q: 2. The number of hours spent playing video games a week by the residents of Minneapolis has a mean…

A: Answer -  Given mean μ = 10 hours   and Standard deviation σ = 13 hours                  Sample size…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 18.2…

A:

Q: Suppose that, according to a recent census, the income per capita measured in U.S. dollars was…

A: The per capita income in country A is $41716. The per capita income in country B is $44871. The…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 11.9…

A: Mean = 11.9 Standard deviation = 1.3

Q: A new species of rabbit has an average body length of 45mm with a standard deviation of 3mm. In a…

A: Given that the new species of the rabbit has an average body of 45mm, which means the mean is 45mm…

Q: A final exam in Reindeer Research Studies has a mean of 60 and a standard deviation of 5. If 25…

A: It is given that the mean is 60, the standard deviation is 5 and the sample size is 25.

Q: Suppose that we have a normal population with mean 7 and standard deviation 4.   What is the…

A: From the provided information, Mean (µ) = 7 Standard deviation (σ) = 4 Sample size (n) = 6

Q: Assume you have a binomial distribution. In an experiment with 100 trials and a probability of a…

A: Given that, n=100 p=1/2 =0.5 Standard deviation=?

Q: Suppose that scores on an exam are normally distributed with mean 80 and standard deviation 5, and…

A: Solution. Given score follow normal distribution. Mean = 80  Score= 5

Q: Suppose 36% of movie goers say comedy is their favorite genre. If a random sample of 120 movie goers…

A: Obtain the mean number of movie goers that prefer comedy. The mean number of movie goers that prefer…

Q: An important aspect of a federal economic plan was that consumers would save a substantial portion…

A: sample size means, a number of individuals picked from the sample. When the sample size is 30 or…

Q: 2. The average number of pages in a novel is 326 with a standard deviation of 24 pages. If a sample…

A: For a random variable X, with mean μ and standard deviation σ , the average of X =1n∑xii=1n =X¯…

Q: 3. Suppose that the average outstanding credit card balance for your professionals is 11,200 with a…

A: Given: Mean value is, μ=11200. Standard deviation is, σ=2600. Number of professionals selected in…

Q: A Nielsen Company report states that the mean number of TV sets in a U.S. household is 2.24. Assume…

A: Obtain the probability that the number of TV sets is greater than 2 in that household. The…

Q: 2.Suppose that 60% of middle school students in San Diego wear braces. A random sample of 250 San…

A: Given Information : Suppose that 60% of middle school students in San Diego wear braces. A random…

Q: Suppose the heights of 18-year-old men are approximately normally distributed, with mean 66 inches…

A: Let "x" be the heights of 18-year-old men. Draw the normal curve and shade the area between…

Q: Suppose a population has a mean of 90 and a standard deviation of 28. If a random sample of size 49…

A:

Q: USA Today reported that about 22% of all people in the United State are illiterate. Suppose you…

A: Let X be the people who are illiterate. Let person being illiterate be success, then X follows…

Q: Suppose that the average number of hurricanes is 32 per year with a standard deviation of 2.8 and…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 9.7 inches,…

A:

Q: The distribution of heights for men in the United States is approximately normal, with a mean of μ =…

A: Where,

Q: Suppose a set of 100 random numbers is normally distributed, with a mean of 50 and standard…

A: suppose a set of random numbers is normally distributed, with a mean of 50 and standard deviation 2.…

Q: 2. The probability that a package is delivered on time is 0.97. If 500 randomly selected packages…

A: Givenprobability that package delivered on time (p)=0.97sample size(n)=500

Q: What is the mean of the sampling distribution of ?̂? What is the standard deviation of the sampling…

A: Given Data population proportion,p = 0.50 sample size n = 40

Q: Of all the students, 44% own an iPhone, with a standard deviation of .03   For that same sample of…

A: Given that of all the students, 44% own an iPhone. This means the mean=0.44 Standard deviation=0.03…

Q: The average number of moves a person makes in his or her lifetime is 12. If the standard deviation…

A: Given,   Mean = 12 Standard deviation = 3.2 Sample size = 30

Q: Suppose that 8% of all males suffer some form of color blindness. 350 men are sampled. a. What is…

A: