A trucking company determined that the distance traveled per truck per year is normally​ distributed, with a mean of 30 thousand miles and a standard deviation of 12 thousand miles. a. What proportion of trucks can be expected to travel between 16 and 30 thousand miles in a​ year? The proportion of trucks that can be expected to travel between 16 and 30 thousand miles in a year is 0.3784 ​

Q: The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 250.1…

A: Empirical rule :  According to empirical rule ,  68% of data falls within the first standard…

Q: Assume that songs the lengths of songs released in 2020 are normally distributed with a mean of 210…

A: (a) Determine the percentage of songs that were less than 150 seconds.…

Q: Weights of walleye in a lake are normally distributed with mean 4.8 pounds and a standard deviation…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: ocolate Vendo machine is designed to discharge an average of 12 ounces with a standard deviation of…

A: The normal distribution  in the center are generally denser and basically less denser at tails.…

Q: civil engineer is verifying that the delivered steel reinforcing bars (rebar) are all within the…

A: The mean length is 3 feet.The sample standard deviation is 0.3 inches.Data follows normal…

Q: oby's Trucking Company determined that on an annual basis, the distance traveled per truck is…

A:

Q: How many miles will be traveled by at least 75​% of the​trucks

A: The mean is 50 and the standard deviation is 11.

Q: 2. Information from the Department of Motor Vehicles indicates that the average age of licensed…

A:

Q: 2) According to Collegeboard.com the national average salary for a plumber as of 2007 is $47,350. If…

A: If x is random variable with mean μ and standard deviation σ  that is, X~(μ,σ).  Then we can find…

Q: The average height for female golden retrievers is 21.96 inches with a standard deviation of 1.77…

A: Given,mean(μ)=21.96standard deviation(σ)=1.77

Q: Demand for computer chips is normally distributed with average 10,000 computer chips and a standard…

A:

Q: A company produces plastic parts for an automobile manufacturer. The diameter of a plastic gear they…

A: Let X be a continuous random variable of diameter of a plastic gear (in​ mm) is normally​…

Q: Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 66…

A:

Q: According to survey data, the distribution of arm spans for females is approximately Normal with a…

A: According to the given information in this question We need to answer subpart

Q: Assume that the heights of men applying for Us Military training are normally distributed with a…

A: Given, Assume that the heights of men applying for Us Military training are normally distributed…

Q: The heights of women are approximately Normal with mean 63.7 inchs and standard deviation 2.5…

A: Given information For Women Mean (µ1) = 63.7 inches Standard deviation (σ1) = 2.5 inches For men…

Q: The height of men is normally distributed, with a mean of 69.0 inches and a standard deviation of…

A: From the provided information,The mean and standard deviation of women's height are as…

Q: A trucking company determined that the distance traveled per truck per year is normally​…

A: Given that :A trucking company determined that the distance traveled per truck per year is normally​…

Q: According to the records of an electric company serving the Boston area, the mean electric…

A: The mean and standard deviation are 1650 and 320, respectively.

Q: percent of men meeting these height requirements.

A: Assume that the heights of American men are normally distributed with a mean of 69.0 inches and a…

Q: 26. Area is 0.0630 ...

A: The area left to Z is 0.0630.

Q: A particular fruit’s weights are normally distributed, with a mean of 712 grams and a standard…

A: Given,mean(μ)=712  gramsstandard deviation(σ)=28  grams

Q: All the houses in Stanton county have a mean size of 1650 square feet with a standard deviation of…

A:

Q: A construction zone on Interstate 15 has a speed limit of 40 mph.  The speeds of vehicles passing…

A: Given,mean(μ)=44standard deviation(σ)=3

Q: 2. Maple tree diameters in a forest area are normally distributed with mean 10 inches and standard…

A:

Q: According to survey data, the distribution of arm spans for females is approximately Normal with a…

A: Mean (µ) = 65.3Standard deviation (σ) = 3.4The distribution of arm spans for females is…

Q: The height of men is a normally distributed variable with a mean of 68 inches and a standard…

A: Mean(μ)=68standard deviation(σ)=3

Q: A grocer finds that the cantaloupes in his store have weights with mean 0.7 kg and standard…

A: Given, Mean weight of cantaloupes is 700 gm. Standard deviation is 53 gm

Q: The average amount of rainfall in Puerto Rico during the past month was 3.5 inches, according to the…

A: Let's go through the calculations again with a more detailed explanation.a. To find the percentage…

Q: The University of Montana admission standards require students to have an ACT score of at least 22.…

A: Given Information :  The University of Montana admission standards require students to have an ACT…

Q: The average McDonald's restaurant generates $3.6 million in sales each year with a standard…

A: In this question given that survey of 27 restaurant Find out a null and alternative hypothesis…

Q: A trucking company determined that the distance traveled per truck per year is normally distributed,…

A: Since you have posted multiple questions, we will provide the solution only to the specified sub…

Q: The blood cholesterol levels of men age 55 to 64 are approximately Normal, with mean 222 milligrams…

A:

Q: Suppose the durations of human pregnancies follow a mound-shaped distribution with a mean of 266…

A:

Q: se the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 66 miles…

A: From given dataThe mean speed of sample vehicles=66 Miles/hrStandard deviation=5 Miles/hr

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.