Determine if the finite correction factor should be used. If​ so, use it in your calculations when you find the probability.   In a sample of 800 gas​ stations, the mean price for regular gasoline at the pump was $2.873 per gallon and the standard deviation was ​$0.008 per gallon. A random sample of size 50 is drawn from this population. What is the probability that the mean price per gallon is less than ​$2.871​?

Q: A vending machine dispenses coffee into an eight-ounce cup. The amount of coffee dispensed into the…

A: Given standard deviation(σ)=0.03

Q: Exhibit 8-12 In order to estimate the average time spent on an exam at a local university, data were…

A: Margin of error explain the error in the data set. It determine by the combined value of standard…

Q: Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 69…

A: Solution:The empirical rule for any normal distribution is given below.68% of the observations fall…

Q: The table below gives the number of accidents each year at a particular road intersection: 2007 4…

A:

Q: a normal population has a mean of $92 and standard deviation of $11. You select random samples of…

A: Given information: Mean (µ)=92Standard deviation(σ)=11Sample size (n)=50 Find: PX¯-µ≤1.50 Formula: Z…

Q: Use the standard normal table to find the z-score that corresponds to the given percentile. If the…

A: Z has follows standard normal distribution with mean zero and standard deviation one.

Q: Consider the prices have a Normal Distribution. Price mean = 75 Price S.D = 8 What is the…

A:

Q: I. A population of raw scores is normally distributed with u = 60 and Determine the z scores for the…

A: Note: As stated in the question, I am only authoring the second question. Given dataMean μ=60sd…

Q: The average daily points for my fantasy baseball team are {4.1, 5.7, 3.8, 4.7, 4.7, 5.5, 4.1, 2.7,…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: K The lengths of pregnancies are normally distributed with a mean of 266 days and a standard…

A: We have given that Mean(µ) = 266Standard deviations (σ) = 15X ~ N (µ, σ )= N(266,15)

Q: Assume that the heights of women are normaly distributed with a mean of 63.6 inches and a standard…

A: Given,   Mean = 63.6 Standard deviation = 2.5 Sample size = 100   The objective is to find the…

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: Determine whether the following graph can represent a variable with a normal distribution. Explain…

A: Given:

Q: dardized exam are norma f the scores are greater th

A: The mean of the standardized exam is given as ,μ=400. The standard deviation of the standardized…

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

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

Q: a variable of a population has a mean of 73 and a standard deviation of 36. a. Identify the sampling…

A: Population mean =73Standard deviation =36We have to finda..The distribution of sample mean if sample…

Q: The average travel time to work for a person living in Kokoma, Indiana, is 17  minutes.  Suppose the…

A: Solution: Let X be the average travel time to work for a person living in Kokoma  Indiana has normal…

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: Tires that wear out bynothing miles will be replaced free of charge.

A: Solution:

Q: A population has a mean μ = 82 and a standard deviation = 24. Find the mean and standard deviation…

A: Given that the distribution is normal distribution. Mean = 82 Standard deviation = 24 Sample size =…

Q: Two hundred pre-engineering students have their midterm grades in the statistics, assuming normally…

A: Given data: μ=2.2σ=0.6Normal distributionN=200n(2<x<2.5)=?

Q: Use the standard normal table to find the z-score that corresponds to the given percentile. If the…

A: we have to find the Z-score of 90th percentile.

Q: A large group of students took a statistics test.   The mean score, from the scale of 100, was  74.5…

A: Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: Use a standard normal table to find the z-score that corresponds to the 5th percentile. Click to…

A: Answer:- Here we need to find the Z-score that corresponding to the 5th percentile.That is, we need…

Q: The length of human pregnancies from conception to birth varies according to a distribution that is…

A: Given mean =266 days standard deviation =16 days.

Q: The grades of business statistics are normally distributed with mean 80 and standard deviation 10.…

A: GivenMean(μ)=80standard deviation(σ)=10

Q: Among coffee drinkers, men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cups.…

A: Let X  denote the number of coffee drinks per day follows a normal distribution. That is, The…

Q: Find the indicated probability. The incomes of trainees at tthe local mill are normally distributed…

A:

Q: Lengths of pregnancies are normally distributed with a mean of 265 days and a standard deviation of…

A: Obtain the length of the pregnancy that separates the premature babies from those that are not…

Q: Please do not give solution in image format thanku It has been reported that the average credit…

A: The one sample z test used to find the significant difference between sample mean and population…

Q: Legs for a wooden dining room table are produced by a computer numerically controlled (CNC) Iathe.…

A: Suppose a random variable x, defines the lifetimes of cutting blade.

Q: What symbol is used for the standard deviation of a population? O a. X-bar O b.H O C. S O d. o

A: Standard deviation: The positive square root of the mean square of the deviations taken from the…

Q: The mode of a normal distribution is 65.5 and the standard deviation is 8.4. Then what is the median…

A: Givenmode = 65.5standard deviation = 8.4

Q: Leave all probabilities as percentages. Define x on all problems with data. The number of…

A: The given data is 74, 52 and 83. a. sample mean- b. sample standard deviation is found using Excel.…

Q: the mean with the value of _____ if it is standardized. a.

A: Here   X ~N( mean  , variance)  if it standardized  that   z = (x -mean )/sd   ~ N(0,1)

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…

Q: Choose the letter of the correct answer. The two important parameters that best describe the normal…

A: Given the statements : The two important parameters that best describe the normal curve are the…

Q: Students in the psychology department at General State University consumes an average of 7 sodas per…

A: We have to find correct answer..

Q: The following table shows the number of people that are either 18, 19, 20 or 21 years old, from a…

A: a)The frequency table shows the age distribution of people.