A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 171.7- cm and a standard deviation of 1.4-cm. For shipment, 9 steel rods are bundled together. Round all answers to four decimal places if necessary. a. What is the distribution of X? X-NO 171.7 b. What is the distribution of ? - N 171.7 0.4667 c. For a single randomly selected steel rod, find the probability that the length is between 171.3-cm and 171.8-cm. 0.1409 d. For a bundled of 9 rods, find the probability that the average length is between 171.3-cm and 171.8-cm. 1.4 e. For part d), is the assumption of normal necessary? O Yes No

Q: The distribution of the lengths of a commercially caught fish is bell-shaped with mean 24 cm and…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: In the 1992 presidential election, Alaska's 40 election districts averaged 2023 votes per district…

A: Note: Thank you for the question. Since multiple questions are posted, according to our policy, we…

Q: You throw a ball as far as you can 5 times, recording the distance for each throw: 165 feet, 184…

A: since only 5 observation is given we will consider them as sample (n = 5)and population (N = 100)…

Q: In the 1992 presidential election, Alaska's 40 election districts averaged 1915 votes per district…

A:

Q: he measure of dispersion O a. Interquartile range b. O b. Coefficient of variation O c. Range O d.…

A: Mean = x¯

Q: Find the range and standard deviation of the following set of data. The range is 196, 188, 191, 202,…

A:

Q: Calculate the sample standard deviation for this data set: 65, 48, 70. The formula for the sample…

A:

Q: n the 1992 presidential election, Alaska's 40 election districts averaged 1951 votes per district…

A: 1951 can be considered as a population mean because it is calculated from the whole population,…

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: It is given that the mean is 116.7 and the standard deviation is 2.

Q: The heights of women follow a normal distribution with a mean height of 63.7, and a standard…

A: The independent variable is the height of women. The height of women follows normal distribution.…

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A:

Q: Q2. Find the standard deviation for the data: 5,10,7,12,0,20 7

A: We have to find the standard deviation for the data: 5,10,7,12,0,20

Q: Chere were three groups of tribal people and there Cephalic Lex were measure. The following are the…

A: Given; data values of three groups of tribal people and three chephalic measure ,mean and standard…

Q: In the 1992 presidential election, Alaska's 40 election districts averaged 1927 votes per district…

A: Hii ! Thanks for posting the question . Since your question has more than three subparts , we have…

Q: Joey and Dee Dee bowled five games at the Rock 'n' Bowl Lanes. Their scores are given in the…

A: Standard deviation is a measure of dispersion. For a set of n observations, x1, x2, ... , xn…

Q: In which month is it more unusual to have a day with a high temperature of 57°​? Explain

A: For January, mean = 36 and SD = 9 Fir July, mean = 77 and SD = 8 First we calucuate the z scores of…

Q: The highway mileage (mpg) for a sample of 8 different models of a car company can be found below.…

A: The highway mileage (mpg) for a sample of 8 different models of a car company is given as:19, 23,…

Q: he highway mileage (mpg) for a sample of 8 different models of a car company can be found below.…

A: Ans#- The highway mileage (mpg) for a sample of 8 different models of a car company can be found…

Q: In the 1992 presidential election, Alaska's 40 election districts averaged 1871 votes per district…

A: a) The distribution of x is normal distribution. x~Nμ ,σ2

Q: set A 0 1 2 3 4 5 6 ● 7 + 8 9 10 Find the mean and standard deviation for Set A. There are 30 total…

A:

Q: In the 1992 presidential election, Alaska's 40 election districts averaged 2031 votes per district…

A: Given: μ=2031,σ=570

Q: The Big Mac index is a way of measuring Purchasing Power Parity (PPP) between different countries.…

A: Data is given for price and countries We have to calculate mean and standard deviation We have to…

Q: 20. For the data in the following sample: 10, 6, 8, 6, a. Find the mean and the standard deviation.…

A: 20. a. The mean of the sample is, x¯=∑ixin=10+6+8+6+55=355=7 Thus, the mean of the sample is 7. The…

Q: For a distribution, bowley's coefficient of skewness is -0.53 Q₁ 16.7 and median = 24.3 what is the…

A:

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: mean=145.2cm S.D=2.2cm

Q: ind the range, the standard deviation, and the variance for the given samples. Round noninteger…

A: The given sample observations are:74, 70, 79, 81, 89, 72, 66, 78, 77, 73, 95 The objective is to…

Q: he dotplot shows heights of some female students; the mean is 161 centimetres and the standard…

A: Given :  mean = 161 and S.D = 3.5 Then z=(x-mean)/SD = (x-161)/3.5

Q: USE A CALCULATOR  In the 1992 presidential election, Alaska’s 40 election districts averaged 1,956.8…

A: Hey, since there are multiple subpart questions posted, we will answer first three subpart…

Q: a. Which test do we use? b. Using this test, decide if there is a difference between the two groups.

A: x = 81.9 y = 86.1 s1 = 9.8 s2 = 10.3 n1 = 64 n2 = 175

Q: The distribution of the tuitions, fees, and room and board charges of a random sample of public…

A: The corresponding positive whole number, that is provided values of the pie chart is interpreted as…

Q: Twenty-six car salespeople were sampled to see how many cars they sold in a month; the following…

A: 19, 27, 27, 14, 23, 17, 32, 11, 27, 31, 22, 33, 28, 26, 31, 25, 23, 31, 26, 36, 24, 28, 12, 28, 25,…

Q: The distribution of the tuitions, fees, and room and board charges of a random sample of public…

A: The question is about frequency distributionGiven :From pie chart :To find :1 ) Freq. dist.2 )…

Q: In the 1992 presidential election, Alaska's 40 election districts averaged 1979 votes per district…

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

Q: Researchers wanted to know if living in schools protects minnows from predators. The researchers…

A: Given information- We have given the data of the researchers placed different numbers of minnows…

Q: In the 1992 presidential election, Alaska's 40 election districts averaged 1989 votes per district…

A: This question has multiple parts. In such cases, we are required to answer the first 3. These 3 will…

Q: Which data set would give the smallest standard deviation? Select one: O a. 100, 150, 200, 250, 300}…

A: Without using any formula for the standard deviation, we can determine which of them has a smallest…

Q: In the 1992 presidential election, Alaska's 40 election districts averaged 2002 votes per district…

A: Since you posted a question with multiple sub-parts, we will solve first 3 sub-parts for you. To get…

Q: b. 7 miles

A:

Q: The data below represents the total number of points each hockey team in the NHL Eastern conference…

A: Given data is {52,66,84,88,93,100,101,117}find the standard deviation