1) Assume the gas mileage for a car is normally distributed with a mean of 20.0 miles per gallon and a standard deviation of 10 miles per gallon. a       What is the probability that a randomly selected car gets 30 miles or less per gallon?  Round answer to 3 decimal places. b        What is the probability that a randomly selected car gets between 10 and 30 miles per gallon? Round answer to 3 decimal places c        Seventy five percent of the time a randomly selected car will get how many miles per gallons or less?   Round answer to 2 decimal places.

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: )Listen The average life of a brand of automobile tires is 30,000 miles, with a standard deviation…

A: Here is given that, mean is 30000 and standard deviation is 2000. We will use z-standard normal…

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Q: help please answer in text form with proper workings and explanation for each and every part and…

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Q: Assume that adults have IQ scores that are normally distributed with a mean of μ = 105 and a…

A: Here given situation is of normal distribution, which is continuous distribution. Let X : IQ of…

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=105 and a standard…

A: Let denote the adults have IQ scores that are normally distributed.Given that,The mean:…

Q: Question-1) The serum cholesterol levels of a certain population of boys have a mean of 170 mg/dl…

A: Mean()=170standard deviation()=30

Q: 2. A radar unit is used to measure speeds of cars on a motorway. The speeds are normally distributed…

A: Given μ=90 km/hrσ=10 km/hr Find The probability that a car picked at random is travelling at more…

Q: Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the…

A: Solution: It is given that, Population mean, 70 Standard deviation, 5 Given that Cody took his first…

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=105 and a standard…

A: Let "X" be the IQ score of the adults.

Q: The owner of a computer repair shop has determined that their daily revenue has mean $7200 and…

A: We have given that  Mean(µ) = 7200Standard deviations (σ) = 1200 Number of days (n) = 30

Q: The weights of steers in a herd are distributed normally. The standard deviation is 300⁢lbs and the…

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Q: The weights of steers in a herd are distributed normally. The standard deviation is 300lbs and the…

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Q: A set of exam scores is normally distributed and has a mean of 79.3 and a standard deviation of 7.4.…

A: Given datanormal distribution μ=79.3σ=7.4choose a random score less than or equal to this 0.0078we…

Q: Trucks in a delivery fleet travel a mean of 130 miles per day with a standard deviation of 39 miles…

A: The data on per day mileage of a delivery truck is normally distributed. Population mean, Population…

Q: om's commuting time from his residence in Carmel to the IUPUI campus has a normal distribution.  The…

A: Given that  The residence in Carmel to the IUPUI campus has a normal distribution.  Standard…

Q: At a tennis tournament a statistician keeps track of every serve.  The statistician reported that…

A: GivenMean(μ)=100standard deviation(σ)=9

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=105 and a standard…

A: given datanormal distributionμ= 105σ = 15P(x<120) = ?

Q: The average amount of snow per year in Whiteville is 32 inches. The standard deviation is 4 inches.…

A:

Q: Find the indicated probability. The weekly incomes of a summer intern in Tesla are normally…

A: Given data,Mean μ=1500sd    σ=300P(X<1200)=?

Q: A survey indicates that for each trip to the supermarket, a shopper spends an average of 45 minutes…

A: Given that, The lengthsnof time spent in the store are normally distributed and are represented by…

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 121…

A: The given data are: Mean = 121 Standard Deviation= 22 (a) Stage 2 high blood pressure occurs if…

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A: Given that, Mean (m)=120 Standard deviation (sd) = 33 The mileage per day is distributed normally.…

Q: Trucks in a delivery fleet travel a mean of 100 miles per day with a standard deviation of 19 miles…

A: Given that, μ=100σ=19 Let X denote the mileage per day and it follows normal distribution. That is,…

Q: 2. Fill in the blanks: A standardized variable always has a mean of O and a standard deviation of…

A: 2. A standardized variable is always has mean 0 and standard deviation of 1.

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a…

A: Policy: Since you have asked multiple questions, we will solve the first question for you. If you…

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A:

Q: Assume that 11% of College students are left-handed. Suppose you randomly select 100 students and…

A: Given that n= number of observation= 100 p= probability of success= 11%=0.11 since each trial is…

Q: Solve the problem. Assume that mountain lions' weights are normally distributed with a mean of 62.6…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 62.6 ,…

Q: A population has a mean of 84 and a standard deviation of 12. A sample of 36 observations be taken.…

A: Given: Population mean μ = 84 Population standard deviation σ = 12 Sample size n = 36

Q: Mary drives to work each morning, and the trip takes an average of µ = 38 minutes. The distribution…

A: Given: µ = 38 minutes,  σ = 5 minutes. The Z follows standard normal distribution. Z=X-μσ

Q: The annual per capita consumption of bottled water was 33.7 gallons. Assume that the per capita…

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Q: Most exhibition shows open in the morning and close in the late evening. A study of Saturday arrival…

A: From the provided information, Mean (µ) = 2 hours and 2 minutes or 122 minutes Standard deviation…

Q: A dice is rolled three times a. Find the probability of getting exactly 2 fours  b. Find the mean,…

A: Let X be a random variable from Binomial distribution with parameter n and p. Mean = np  Variance=…

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Q: Provide an appropriate response. Use the Standard Normal Table to find the probability. IQ test…

A: Let X be the IQ scores  from normal distribution with mean (μ) = 105, standard deviation (σ) = 11…

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A:

Q: Time to Complete Final Exam. The time needed to complete a final examination in a particular college…

A: Let X be the time needed to complete a final examination. It is given that X follows a normal…

Q: Provide an appropriate response. Use the Standard Normal Table to find the probability. IQ test…

A: Z is known as standard normal variable and it's value is obtained using standard Normal table.

Q: The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 370…

A: Let the random variable Y denote the weight of a small Starbucks coffee is a normally distributed…

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.