A small retail store has customers whose ages are normally distributed, with a mean of 37.5 and a standard deviation of 7.6. What is the probability that a randomly selected customer is between 46 and 54 years old? Round your answer to three decimal places, e.g. 0.685.

Q: Public health statistics indicate that 26% of  American adults smoke cigarettes. A random sample of…

A:

Q: On the Bar Chart in Figure C1 above, which of the datasets (left, middle or right) has the highest…

A: Bar chart is given here. Error bars gives the information about how the data is spread around the…

Q: bank’s loan officer rates applicants for credit.  The ratings are normally distributed with a mean…

A: Given,

Q: The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation…

A: (a)   Obtain the probability that pregnancy will last 307 days or longer. The probability that…

Q: Suppose your statistics professor graded your test with a Z Score.  You earned a 3.25 on a test with…

A: Answer:- Given, Mean, µ = 71  Standard deviation, σ = 8  And Z-score = 3.25  We need to find the…

Q: A particular fruit's weights are normally distributed, with a mean of 209 grams and a standard…

A: Population mean, μ = 209 gramsPopulation standard deviation, σ = 18 gramsLet, X, be the particular…

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: A particular fruit's weights are normally distributed, with a mean of 323 grams and a standard…

A: given data, normal distributionμ=323σ=5we have to find out the given probabilties.

Q: According to a recent survey, the salaries of assistant professors have a mean of $41,750 and a…

A: Given Data Population Mean,μ = 41750 Population Standard Deviation,σ = 7000

Q: Solve the problem. The probability that an individual is left-handed is 0.18. In a class of 90…

A:

Q: An appliance dealer's website features the mean life expectancy values for major household…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: IQ test scores are normally distributed with a mean of 98 and a standard deviation of 16. An​…

A:

Q: The heights of women follow a normal distribution with a mean height of 63.7, and a standard…

A: The independent variable is the height of women. The height of women follows normal distribution.…

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

A: To solve these problems, we need to use the properties of the normal distribution. Specifically, we…

Q: Suppose, you play a game, and the result is simply "win" or "lose". For every 15 games played, you…

A:

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: what is the probability that you will receive a grade that is between 89 and 97 on this exam?

A: The mean of grades for the latest statistics exam is 93 and SD is 4.

Q: According to AAA, the price of a gallon of regular, unleaded gas across gas stations in North…

A: Let X be the price of a gallon of regular, unleaded gas across gas stations in North Carolina is…

Q: Full time Ph.D. students receive an average of $13,537 per year. If the average salaries are…

A: Introduction: Define X as the random variable of interest here, which denotes the salary of the…

Q: You take a sample of size 190 and get 23 successes. Confirm that the sample size was large enough to…

A: Given that Sample size (n) = 190  probability of success (p) = 23/190 = 0.12

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: The amount of annual snowfall in a certain mountain range is normally distributed with a mean of 70…

A: let x be the amount of annual snowfall in certain mountain range follow normal distribution with…

Q: In the 1992 presidential election, Alaska's 40 election districts averaged 1936 votes per district…

A: Given : Mean = μ = 1936 Standard deviation = σ = 570 Sample size = n = 40

Q: The amount that people pay for their cellphone service is normally distributed with a mean of $136…

A:

Q: Approximately 6% of American drivers d not text while they drive. Suppose you are working with a…

A: The given situation fits binomial distribution as there are 300 independent trials (300 people),…

Q: Cattle are often fattened in a feedlot before being shipped to a slaughterhouse. Suppose the weight…

A: It is given that the weight gain is normally distributed with average of 1.75 pounds per day and a…

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: The body temperatures of adults are normally distributed with a mean of 98.6° F and a standard…

A: Z= x¯-μσn~N(0,1) n  = 36 , x¯ = 98.6 , μ = 98.6 , σ = 0.6

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

A:

Q: 2. The average credit card debt per household in 2001 was $8637 with a standard deviation of $2400.…

A: population mean = $8637Population standard deviation = 2400Sample size (n)= 225

Q: The average chef at a restaurant earns $17 an hour with a deviation of $1.75. What are the chances…

A:

Q: Trucks in a delivery fleet travel a mean of 8080 miles per day with a standard deviation of 3030…

A:

Q: According to BusinessWeek, 44% of advertisers claim they have been a victim of internet click fraud.…

A: The mean is, μ=np=120×0.44=52.8 The mean is 52.8. The standard deviation 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: 50 part-time students were asked how many courses they were taking this term. The (incomplete)…

A: Hi, we are supposed to answer three subparts at a time. Therefore, I am answering the first three…

Q: When a manufacturing process is operating properly, the mean length of a certain part is known to be…

A: In order to test the claim that the process needs some adjustments, determine whether the mean…

Q: Regardless of the kind of workout a gym goer does, the mean time spent on the treadmill is 45…

A: Given,sample size(n)=36mean(μ)=45standard deviation(σ)=15

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.