1. The iPhone battery capacity is normally distributed with a mean of 4 years and a standard deviation of 10 months. What is the probability that a randomly selected battery will last more than 5 years? Answer: b. What percentage of batteries will last between 5 and 6 years? Answer: What percentage of batteries will last less than 4 years? Answer: d. What percentage of batteries will last between 2.5 and 4.5 years? Answer:

Q: The weight of arctic polar bears is normally distributed with a mean of 980 pounds and a standard…

A: we have given that, the weight of arctic polar is normally distributed with mean (mu)= 980, and…

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample…

A: From the given information,   Mean  = 35 Standard deviation = 7.5   The objective is to find the…

Q: According to Runzheimer International, a typical business traveler spends an average of $281 per day…

A: We have given that Mean(µ) = 281 Population Standard deviations (σ) = 47 Sample size (n) = 50

Q: The average expenses of the Dela Cruz Family is ₱12,600 every half of a month with a standard…

A: Given data,μ=12600σ=1570P(X<11000)=?

Q: 21. The mean height of a Clydesdale horse is 72 inches with a standard deviation of 1.4 inches. What…

A: Mean(µ) = 72Standard deviations (σ) = 1.4X ~ N (µ, σ )= N(72, 1.4)

Q: normally distributed with a mean of 28 ounces and a standard deviation of 1 ounce.  What is the…

A: From the available information, the amounts of boxed cereal are normally distributed with a mean of…

Q: 3. A line up for tickets to a local concert had an average (mean) waiting time of 20 minutes with a…

A: Formula : Z =(X - μ)/σ

Q: Cititon Forest contains a population of 297 chupacabra, whose masses have a mean of 40.1 kg and a…

A: Given that.   X~N( μ , ?^2 )   μ=40.1  , ?=8.3  , n=103   Z-score =( x - μ )/?

Q: Q/The speed of a file transfer from a company server to any employee personal  computer is normally…

A:

Q: 1. The Prior to medical visits, patients are asked to complete a self-administered medical history…

A:

Q: Provided that the ACT is reasonably normally distributed with a mean of 18 and standard deviation of…

A: From the provided information, Mean (µ) = 18 Standard deviation (σ) = 6 Let X be a random variable…

Q: A web site reported in 2018 that 47% of all web traffic comes from laptops and desktops. Based on a…

A:

Q: Based on Aircraft Safety Council of Country PQR, an average of 18 aircraft accidents occurred each…

A: Given,an average aircraft accidents occurred each year is 18so an average aircraft accidents…

Q: 1. If the measure of systolic blood pressure is normally distributed with a mean of 120 and a…

A: Hello, since your question has multiple parts, we will solve the first question for you. if you want…

Q: 4. A researcher claims that the standard deviation of the numberof deaths annually from typhoons in…

A:

Q: 7. The City Transport and Traffic Management Office (CTTMO) study of 8000 vehicles that passed the…

A: Given: The City Transport and Traffic Management Office (CTTMO) study of 8000 vehicles that passed…

Q: A large corporation pays its employees an average of $64,000 per year with a standard deviation of…

A:

Q: 4.The lengths of trout in a certain lake are normally distributed with a mean of 7 inches and a…

A: For Normally distributed data, mean and standard deviation have given. Minimum size of sample…

Q: Suppose that the annual household income in a small Midwestern community is normally distributed…

A: Given : X ~ Nμ, σ mean, μ = $55000 S.D, σ = 4500 a. P(household will have an income between $50000…

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample…

A:

Q: Suppose that the lifetimes of light bulbs are approximately normally​ distributed, with a mean of 56…

A: From the provided information, Mean (µ) = 56 Standard deviation (σ) = 3.2 Let X be a random variable…

Q: 4 An LED lightbulb manufacturer produces lights with a mean lifespan of 10,000 hours and a standard…

A: Given information- Population mean µ = 10,000 hours Population standard deviation, σ = 1,000 hours…

Q: What is the probability that a randomly selected bag contains fewer than 1125 chocolate​ chips? ​(b)…

A: From provided information, chocolate chip cookie is approximately normally distributed with a mean…

Q: In determining automobile mileage ratings, it was found that the mpg in the city for a certain model…

A: a. Let x¯ be the mean mpg in the city which follows normal distribution. The mean of the sample mean…

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample…

A: Given,mean(μ)=35standard deviation(σ)=7.5sample size(n)=50

Q: An electrical component is designed to provide a mean service life of 3000 hours, with a standard…

A: Given that: X is normal Distributed with mean µ = 3000.0 and standard deviation σ = 800.0 By using…

Q: what is the mean and stanadard deviation of a uniform (6,15) random variable?

A:

Q: Suppose that the heights of children in kindergarten can be described by a Normal model with mean…

A:

Q: Given the amount of annual snowfall in Big Bear City is normally distributed with μ=62 inches, and a…

A: Here the amount of annual snowfall is normally distributed with mean=62 and standard deviation=10. A…

Q: Suppose that the lifetimes of light bubs are approximately normaily dstributed, with a mean of 56…

A:

Q: Suppose that the waiting time for a license plate renewal at a local office of a state motor vehicle…

A:

Q: 4. The lengths of trout in a certain lake are normally distributed with a mean of 7 inches and a…

A:

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample…

A: Solution: We are given:

Q: According to Runzheimer International, a typical business traveler spends an average of $281 per day…

A:

Q: Cans of a popular soft drink are filled so that the actual amounts have a mean of 15.00 oz and a…

A:

Q: Runners in a race have a mean finishing time of 91 minutes and a standard deviation of 16 minutes.…

A:

Q: 4. The results of a state-wide examination of the reading skills of sixth-grade students were…

A: For X, a random variable, the Z-score is, Z=X-μσwhere, μ=population mean             σ=population…

Q: Salvatore, as the director of a regional bank, is concerned about the wait times of customers at the…

A: 48 patrons at each branch selected, For each branch means and standard deviation mentioned. We have…

Q: Suppose the tires on your car have an average life expectancy of 60,000 miles, with a standard…

A:

Q: The number of plants pollinated by bees follows a normal distribution with a mean of 6,543 plants…

A: Given information Mean µ = 6543 plants Standard Deviation σ = 35 plants

Q: Rosebushes are known to produce rose blooms during their blooming period. A botanist (plant expert)…

A: Given: The researcher (botanists) plans to examine the number of rose blooms during the blooming…

Q: Traveling between EDC campus and Gulshan campus of Iqra university via shuttle bus takes, on…

A: The average time taken by the bus is 28 minutes. The standard deviation of the time taken by the bus…

Q: The time that a shopper spends in the grocery store is normally distributed, with a mean of 45…

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: Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 57…

A:

Q: 1) A sample of salaries of university assistant professors in the business department revealed a…

A: A normal distribution follows a bell shaped curve which is centred at the mean and it is also called…

Q: In a murder trial in Los Angeles, a shoe expert stated that the heights of men with size 12 shoes is…

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: Traveling between two campuses of a university in acity  via shuttle bus takes, on average, 28…

A: Let us denote X=the time for traveling between two campuses of a university in a city via shuttle…

Q: 2.) A ski gondola in Vail, Colorado that carries skiers up a mountain bears a plaque stating that…

A: n=12, maximum weight = 2004 mean = 188.6  std.dev = 38.9

Q: Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 57…

A: Given, The proportion of light bulbs will last more than 60 hours is obtained as- The required…

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.