A an electric battery for a new electric vehicle has a range that is normally distributed with an average of 400 miles and a standard deviation of 20 miles. What percent of batteries will have a range between 380 miles and 420 miles? 68% 95% 99.7%

Q: The weights of college students at a particular college has a normal distribution with a mean of 126…

A: Let random variable X represents the weights of college students at a particular college.…

Q: The average class size this semester in the business school of a particular university is 39.0…

A: We have find Z score..

Q: Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest…

A:

Q: Bags of whole coffee beans are filled automatically on a production line. A machine fills each bag…

A: From the provided information, Mean (µ) = 290 Let X be a random variable which represents the weight…

Q: Breathing rates for humans can be as low as 4 breaths per minute or as high as 70 or 75 for a person…

A: (a)   Obtain the fraction of all students would have breathing rates in the interval 12.9 to 15.1…

Q: Students at a major university are complaining of a serious housing crunch. Many of the university…

A: Given the mean distance commuted to school by students is 16.0 miles, and the standard deviation of…

Q: College and University Debt A student graduated from a 4 -year college with an outstanding loan of…

A: In question, Given that A student graduated from a 4 -year college with an outstanding loan of $9942…

Q: A company that manufactures tires produces a tire that has a average life span of 65,000 kilometers…

A: We have to find given probability.

Q: College and University Debt A student graduated from a 4 -year college with an outstanding loan of…

A: We have given that  For college student  X=10205 ,mu=8487,sigma=1858 And For university student…

Q: In Major League Baseball, the average fastball pitch is 90 miles per hour, μ = 90, with a standard…

A: Given, the average fast ball pitch is 90 miles i.e. µ=90. And has a standard deviation of 3 miles…

Q: Identify the value corresponding to the indicated percentile. A tire company finds the lifespan for…

A: The question is about normal dist. Given : Mean lifespan for tires ( μ ) = 47500 miles Std.…

Q: WEIGHTS IN KG OF 10 PREGNANT LADIES, WERE RECORDED IN ANTENATAL CLINIC. THE MEAN WEIGHT WAS 78KG AND…

A: Given: s2=45 Then, the standard deviation iss=s2=45=6.7

Q: Battery lifetime is normally distributed for large samples. The mean lifetime is 500 days and the…

A: Given,   Mean = 500 Standard deviation = 62   The objective is to find the percent of batteries have…

Q: On the planet of Mercury, 4-year-olds average 3.1 hours a day unsupervised. Most of the unsupervised…

A: It is given that the mean and standard deviation are 3.1 and 1.7, respectively.

Q: (a) Determine the mean and standard deviation of each data set. The mean of the data set for bond…

A: For Bond Mutual fund  given data is  3.2,1.8,1.9,3.4,2.4,2.7,1.6,2.0

Q: Three hundred college freshmen's grade point averages are seen to be nearly regularly distributed,…

A:

Q: A particular fruit's weights are normally distributed, with a mean of 358 grams and a standard…

A: Given X is normal Distributed with mean µ = 358.0 and standard deviation σ = 17.0 now will use…

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: College and University Debt A student graduated from a 4-year college debt is $8489 with a standard…

A: formula for z-score is

Q: College and University Debt A student graduated from a 4 year college with an outstanding loan of…

A:

Q: Kindergarten Companies that design furniture forelementary school classrooms produce a variety of…

A:

Q: Allegiant Airlines charges a mean base fare of $89. In addition, the airline charges for making a…

A:

Q: Tires The mean tread life of a tire is 30,000 miles with a standard deviation of 2000 miles. Tire…

A: Given,Mean μ = 30000Standard deviation σ = 2000

Q: A particular fruit's weights are normally distributed, with a mean of 269 grams and a standard…

A:

Q: A particular fruit's weights are normally distributed, with a mean of 621 grams and a standard…

A: It is given that the fruits weights follow normal distribution with mean 621 and standard deviation…

Q: Brewed decaffeinated coffee contains some caffeine. We want to estimațe the amount of caffeine in 8…

A: Obtain the 90% confidence interval estimate for the true mean amount of caffeine in eight-ounce cups…

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…

A:

Q: The mean weight of fish raised at the Stockton Fish Farm is 2.2 pounds. The standard deviation is…

A: Chebyshev's theorem: At least 1-(1/k2) of the values are lies between k standard deviations µ±kσ.…

Q: a) What is the point estimate for the average height of active individuals? cm b) What is the median…

A: We have to find some summary measure for the height of active individuals.

Q: 1. A breed of dog has weights which are normally distributed with a mean of 80 pounds, and a…

A:

Q: Delta car batteries are known to be normally distributed with a mean of 45 months and a standard…

A: Given data isMean(μ)=45 monthsstandard deviation(σ)=8 months

Q: Aski gondala carries skiers lo the top of a mauntain. Assume that weights af skiers are normally…

A: (b)   Obtain the probability that their mean weight exceeds the value of 140 lb.   The probability…

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: rubbish waste disposal facility that is overloaded if its 4703 households discard waste with weights…

A:

Q: Mean typing speed is 90 wpm, with a standard deviation of 18 wpm. What typing speed separates the…

A: Let X be the random variable representing the typing speed. It is required to find the value of x…

Q: On the planet of Mercury, 4-year-olds average 3.1 hours a day unsupervised. Most of the unsupervised…

A: As per the compony rules, Expert can solve only three subparts of the question.   Given, 4 years old…

Q: 15. Annual Miles Driven The average miles driven annually per licensed driver in the United States…

A: a) z score for 16000 miles:

Q: A credit card company claims that the mean credit card debt for individuals is greater than $4,900.…

A: Givensample size(n)=32Mean(x)=5066standard deviation(s)=675α=0.10

Q: An oceanographer claims that the mean dive duration of a North Atlantic right whale is 11.6minutes.…

A: Denote μ as the population mean dive duration of North Atlantic right whale.

Q: A credit card company claims that the mean credit card debt for individuals is greater than $5,200.…

A: Solution: State the hypotheses. Null hypothesis: That is, the mean credit card debt for individuals…

Q: regulation basketball that weighs 22.0 ounces with a standard deviation of 1.0 ounce. Assume that…

A: Define the Random Variable,  X : weight of a regulation basket ball Given that, X ~ N(22,1) So, Z =…

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

A: Let X be the length of the rods. Here, X is normally distributed with mean, μ=114.5 cm and standard…

Q: A credit card company claims that the mean credit card debt for individuals is greater than $5,000.…

A:

Q: Nine hundred thirty-two businessmen accepted the Mayaman Challenge of one of the Philanthropic…

A: Given: sample size(n)=932 average(μ)=135standard deviation(σ)=15   Z score : z=x-μσ

Q: Annual income: The mean annual income for people in a certain city (in thousands of dollars) is 41,…

A: Let X be the random variable from normal distribution with mean (μ) = 41 standard deviation (σ) = 28…

Q: A high school student spends an average of 6 hours (#=6) on their phone a day with a standard…

A:

Q: On the planet of Mercury, 4-year-olds average 3 hours a day unsupervised. Most of the unsupervised…

A:

Q: An experiment compares weight of fish for two different brands fish food. Nacho Average Minosfish…

A: Given information: μAverage=10, σAverage=1.5μImpossible=12, σImpossible=1.0

Q: Renee scores an average of 198 points in a game of bowling, and the points are normally distributed.…

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: Website Load Times What proportion of websites loaded within 2 standard deviations of the mean? 14 a…

A: The plotted histogram is symmetric and bell shaped . Therefore , website load times follows normal…

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.