company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 165.4-cm and a standard deviation of 1.5-cm. For shipment, 18 steel rods are bundled together. Find P49, which is the average length separating the smallest 49% bundles from the largest 51% bundles. P49 = -cm

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: The weights in ounces of newborn infants were recorded by a hospital. The weights were 88, 99, 82,…

A: Given data,   88, 99, 82, 81, 84 and 100   First find the sample mean. Mean:

Q: The ACT is an exam used by colleges and universities to evaluate undergraduate applicants. The test…

A: Given,mean(μ)=22.2standard deviation(σ)=4.9

Q: Use z scores to compare the given values.   The tallest living man at one time had a height of 249…

A: Given that: Population mean, μ=174.45 Population standard deviation, σ=6.75 Height of tallest man,…

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: It is given that mean amount of food is 12 oz and number of dogs is 16. The sum of squared…

Q: If the grades are normally distributed and 8 students received a B, how many students took the…

A: Let C denote the grades of students. Given that X follows N(mean = 82, SD = 5), then  Z = (X -…

Q: At the end of the semester a professor wants to organize student’s grades by how many students…

A: Given data, At the end of the semester a professor wants to organize student’s grades by how many…

Q: The following are data regarding number of minutes to accomplish a certain task: 121, 134, 145, 212,…

A: From the provided information, The data values are as follow: 121, 134, 145, 212, 289, 306, 367,…

Q: The mean height of 24 male workers in a factory is 62 inches and the mean of 36 female workers in…

A: Answer: From the given data, Number male workers = 24 = n1 Number of female workers = 36 = n2 Mean…

Q: Matthew made the "Reach for the Top" trivia team because he consistently gave the correct answers in…

A: Let, Matthew made the "Reach for the Top" trivia team because he consistently gave the correct…

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: The population Mean is 125 with a st dev of 22.However , the population distribtuon is skewed to the…

A:

Q: 500 freshmen at Crescent High School took an algebra test. The scores were distributed normally with…

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

Q: 1. (12pt) A researcher is studying hospital cleanliness comparing carpeted rooms with uncarpeted…

A: There are two independent samples which are carpeted rooms and uncarpeted rooms. We have to test…

Q: The GMAC Insurance company reported that the mean score on the National Drivers Test was 67.5 with a…

A:

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: normal distribution μ = 100σ = 15 P(85<x<110) = ?

Q: A gym class is taking a fitness test. The gym teacher is recording how many sit-ups the participants…

A:

Q: 5 students were given a test. The average and standard deviation of the 5 scores were found to be…

A:

Q: Explain with an example of the distribution of values around the mean by using general rules.…

A: We have to find given distribution.

Q: Use the sample mean(78.5)and sample standard deviation (12.3671)in your calculations below. Use…

A: Given that:

Q: Use z scores to compare the given values.   The tallest living man at one time had a height of 258…

A: Let X be the tallest living man at one time had a height  Y be the shortest living man at that time…

Q: Steven ran the 100 meter dash in 13 seconds.  What is his T-score if the class mean was 14 seconds…

A: t statistic

Q: The average and standard deviation for ACT scores are 20 and 3 respectively. average and standard…

A:

Q: Convert score 46 to z-score if the mean is 40 and the standard deviation is 4.

A: The definition of a z-score is:   z = (X - μ) / σ

Q: On a nationwide math test, the mean was 52 and the standard deviation was 4. If Roberto scored 85,…

A: The z score formula is,

Q: The data are daily high temperatures in a town for one week. Find the mean, median, range, sample…

A: From the provided information, The data values are as follow: 59, 50, 65, 68, 72, 80, 82 Sample size…

Q: Given the data: 47, 55, 57, 63, 73. Find the standard deviation. Round the final answer to the…

A:

Q: The value of the stanard error of the mean for the scores :  1,2,3,4,5 ?

A: Solution: Let X be the random variable. The given data is 1, 2, 3, 4 and 5.

Q: Find the mean and median of the class’s scores on this quiz. Round to two decimal places when needed

A: Given that  From histogram  X-axis takes X values and Y-axis takes Frequency  X Frequency = f 1…

Q: Use technology to perform two-sample t-test to determine whether there is a difference in the mint…

A: Two sample t -test    To determine whether there is difference in the mint dates and the values of…

Q: 1. (12pt) A researcher is studying hospital cleanliness comparing carpeted rooms with uncarpeted…

A:

Q: A candy manufacturer has replaced 5.17% of their chocolate bars with a new mystery flavor. Find the…

A: Given: Sample size (n) = 424 p(chocolate bars with a new mystery flavor) = 5.17% = 0.0517

Q: The highway mileages of 147 cars are in a file named CARS2.+ These cars are 2003 models. Find the…

A: Mean Formula The mean formula is defined as the sum of the observations divided by the total number…

Q: On a nationwide math test, the mean was 72 and the standard deviation was 7. If Roberto scored 90,…

A: Given that, Mean = 72 Standard deviation = 7

Q: Which test was better?. Gina took a midterm in her math class and her biology class. After she gets…

A: The objective is to calculate z score for math test for Gina. we have given  x=47 mean(x)=39…

Q: Tony decided that he wants to pursue a master degree in business. One of the requirement is the GMAT…

A: Given that  Tony's GMAT = X = 730 Mean = 556 , Standard deviation = 116

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: Ivan and his family are relocating to Los Angeles and have found a great area in which to live. The…

A:

Q: A large chemistry course took their final exam. The mean was 75 with a standard deviation of 8. What…

A: Given Information:  Mean (u) = 75  Standard Deviation (s) = 8  To find: Exam scores that separates…

Q: Use z scores to compare the given values.   The tallest living man at one time had a height of 245…

A:

Q: approximately the same. A recruiting office randomly surveys 50 entry level statisticians and 50…

A: Given Information: Number of statisticians,n1=50 Mean salary of statistician, x1¯=41100 Standard…

Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: Given: The middle 68% of the scores are falling between 70 and 84.

Q: The mean amount of time it takes a kidney stone to pass is 16 days and the standard deviation is 5…

A: Given that  The mean amount of time it takes a kidney stone to pass is 16 days. (μ)=16 Standard…

Q: 3. Listed below are the number of major injuries each year. The number listed are from year…

A: Sort the data from smallest to largest. a. The mean of the data is obtained by :  sum of all…

Q: Consider the data:  10, 7, 9, 13, 11, 13, 14.  (Show your work.) a)Determine the mean.…

A:

Q: In the 1992 presidential election, Alaska's 40 election districts averaged 2108 votes per district…

A: Given: Alaska's 40 election districts X = number of votes for President Clinton for an election…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.