1. The height of B00 men form a normat distribution with a mean of 165 cm and a standard deviation of 25 cm if 150 men have their height between 160 cm and 170 cm then the number of men whose height is less than 160 cm is. a 325 b 425 C 350 d. NOTA

Q: Suppose a population is known to be normally distributed with a mean, μ, equal to 144 and a standard…

A: Given,   Mean = 144 Standard deviation = 27   The objective is find the percent of the population…

Q: 2. Suppose that the people living in a particular city were found to have a mean score of 40 and a…

A: People living in particular city were found to have a mean score of 40 and standard deviation as 5,…

Q: b) Some engineering components have a mean length of 20 mm and a standard deviation of 0.25mm.…

A: Given problem is :

Q: .Suppose a population is known to be normally distributed with a mean, u, equal to 144 and a…

A: Given data,μ=144σ=27P(90<144)=?

Q: 12. The following are the percentages of ash content in 12 samples of coal found in close proximity:…

A: Given data is9.2,14.1,9.8,12.4,16.0,12.6,22.7,18.9,21.0,14.5,20.4,16.9

Q: Suppose an industrial/organizational psychologist is interested in the relationships between job…

A: Given Information: To appreciate the differences among the countries, she calculates the z-scores…

Q: If the test scores in a class are normally distributed with a mean of 60 and a standard deviation of…

A: Given,Mean μ = 60Standard deviation σ = 4Using 1-2-3 rule 68% will fall within the 1 standard…

Q: 1. Find the standard deviation for the following data:57, 64, 43, 67, 49, 59, 44, 47, 61, 59 (answer…

A: Given that  Observation: XX X^2X2 1 57 3249 2 64 4096 3 43 1849 4 67 4489 5 49 2401 6…

Q: 020 | 007 7. The number of messages sent per hour over a computer network has the following…

A:

Q: Suppose that, for a certain mathematics class, the scores are normally distributed with a mean of 75…

A: We have to fill given blank in probability distribution table...

Q: 9. The highest of children in a school are normally distributed with a mean of 116 CM and standard…

A:

Q: The standard deviation for the following :sample is Class limits Frequency 2 19-13 7 26-20 12 33-27…

A:

Q: 9. If acceptable air quality in Omak during the summer is normally distributed with a mean of 80 and…

A: The control charts are used in the statistical quality control as a powerful tool for discovering…

Q: 11. A manager of a department times how many hours each person works within her department. 43…

A: Answer The correct option is 9.5

Q: 2. The following is the distribution of the percentage of students belonging to a certain minority…

A: A measure of central tendency is a single value that attempts to describe a set of data by…

Q: 14. When n 2 30 and the population standard deviation is known, what is the appropriate…

A:

Q: 4. A travelling salesman checks the prices of gasoline in gas stations within his area of…

A: This is a problem of unclassed measure of data. Here we will use the general formula for standard…

Q: 6. The following data give the number of new cars sold at a dealership during a 12-day period 13, 5,…

A: see

Q: The mean deviation of the data(1 * :2,9,9,3,6,9,4 from the mean is 2.23 3.23 O 2.57 O 3.57 O

A:

Q: 14 For a data set, if the coefficient of variation (C.V.) is (24.23%) and the mean is (270), then…

A:

Q: 5. Find the Median, Mode and Standard deviation, when Mean is 60, C.V. is 50%, and Coefficient SKP)…

A:

Q: 5.) The average travel time of senior high school students in Pasig City is 32.07 minutes with…

A: Given,mean(μ)=32.07standard deviation(σ)=15.02sample size (n)=400

Q: 5. Suppose a normal distribution has a mean of 60 and a standard deviation of 4. What percentage of…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: 5. The following data are the ages of diabetic patient of a certain hospital. A are the ages of nine…

A: We will answer the first two questions. Please resubmit the other questions separately which one you…

Q: 1)Suppose that a town has total 10,000 6th grade students and average weight of them is found to be…

A:

Q: 7. What type of statistical test should be used when the population is approximately normally…

A: When Population is normally distributed and population standard deviation is known we use the Z…

Q: 2. The distribution of the student heights at a large college is approximately bell shaped. If the…

A: 2. The mean height is 71 inches. It is given that approximately 95.5% of the heights fall between 63…

Q: 5 Forty concrete cubes were subjected to failure tests in a crushing machine. Failure loads were as…

A: Note : We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

Q: In a large section of statistics class for the final exam are normally distributed, with a mean of…

A: Given: μ=72σ=9x~N(72,92)

Q: If the variance is 140.2, what is the Standard deviation from the following? O a. 16.56 O b. 11.84 O…

A: Given data,Variance=140.2Standard deviation=?

Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 144 and a standard…

A:

Q: 10) The weights of a large population of male students have a mean of 160 pounds with a standard…

A: Solution

Q: Suppose a population is known to be normally distributed with a mean, u, equal to 144 and a standard…

A: In question,  Given that, a population is normally distributed with mean 144 and standard deviation…

Q: 2. The height of an adult male is known to be normally distributed with of mean of 69 inches and a…

A: X~N( μ , ?^2 )    μ =69     , ? = 2.5   Z-score =( x - μ )/?

Q: 2. The average number of customers that visited a particular store during the past year is 160 per…

A:

Q: A bank vice president feels that each savings accoun custome has, average, threë credlt cards. The…

A: The probability distribution of a random variable includes all the possible values of the random…

Q: 4. A travelling salesman checks the prices of gasoline in gas stations within his area of…

A: a.What is the standard deviation? standard deviation =  Here mean is 49.93 and n=15 therefore…

Q: 4) Which of these samples would have the smallest standard deviation? a. 101, 92, 84, 131 b. -25,…

A:

Q: Suppose that the score in Mathematics exam is normally distributed with a mean of 20 and a standard…

A:

Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 144 and a standard…

A:

Q: Assume a data set is normally distributed with mean 172 and standard deviation 15. If the data set…

A: The data set of 450 data values is given in the question which is normally distributed with mean 172…

Q: Which of the following data sets has the smallest standard deviation? a. 1, 2, 3, 4, 5 b.…

A:

Q: 6. A financial executive believes that each savings account customer has, on average, two credit…

A: Given, A financial executive believes that each customer has on average two credit cards Given, a…

Q: Consider the following two sets of sample data: A: 33, 42, 51, 54, 66, 78 B: 2, 4, 9, 5, 6, 10 The…

A: Solution: From the given information, the standard deviation of A is 16.2 and the standard deviation…

Q: The weight of packages that are sent by a certain parcel delivery service has a normal distribution…

A: Since you have submitted two questions, we'll answer the first question. For the second question…

Q: 29. The scores on a Sociology examination are normally distributed with a mean of 70 and a standard…

A: It is given that the scores are normally distributed with mean 70 and standard deviation…

Q: . Compute Standard deviation from the following data 60 Marks 10 20 30 40 50 No. of students 20 7 3.…

A: Solution is given: Give data:

Q: 30. The following scores were given by 6 judges for a gymnast's performance in vault of an…

A: Given data : 7,5,9,7,8,6

Q: 3. (a) In a distribution of 1200 values, the mean is 75 and the standard deviation is 12. Using…

A: Chebyshev's inequality is applied on the probability theory. According to this theorem at least…