Find the probability and interpret the results. If convenient, use technology to find the probability. The population mean annual salary for environmental compliance specialists is about $60,000, A random sample of 31 specialists is drawn from this population. What is the probability that the mean salary of the sample is less than $57,500? Assume o=$6,500. The probability that the mean salary of the sample is less than $57,500 is (Round to four decimal places as needed.)

Q: real estate agent’s rate of success to make a sale among his customers is 20%. In a normal workweek,…

A: From the given information we find the solution.

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Q: Determine the probability that the professor asks the class 9 times in one session. Let X be the…

A: Here use poission process  And given that The number of times the professor asked the class "how are…

Q: The mean height of women in a country​ (ages 20-29) is 63.9 inches. A randon sample of 70 women in…

A: Given μ= 63.9 Sample size=n=70 σ=2.87

Q: standard deviation of the mean,

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A: Given that  Mean testing times = 44 SD of testing times = 2

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Q: According to National Testing data, college math class testing times are Normally distributed with a…

A: Given information Mean µ = 56 Standard deviation σ = 4

Q: Solve In R programmning language: Suppose we know that the birth weight of babies is Normally…

A: Given  μ=3500, σ=500 P(X>3100)= ?

Q: O O O A social media survey found that 71% of parents are "friends" with their children on a certain…

A: As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted....…

Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

A: Given: Mean=1487 standard deviation=307

Q: Find the probability that the weight of a randomly selected steer is between 530 and 1430 lbs. Round…

A: Let , X→N(μ=1100 , σ=90000=300) Our aim is to find the probability that the weight of a randomly…

Q: The weights of steers in a herd are distributed normally. The variance is 10,000 and the mean steer…

A: Population mean=1400Population variance=10000Population standard deviation =√Variance=√10000=100

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: Empirical probabilities are deeply rooted in probability. essentially percentages based on a large…

A: Empirical probability or experimental probability is determined how often an event has been observed…

Q: About _____​% of samples of 33 cities will have a mean childhood asthma prevalence greater than…

A:

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

A:

Q: There are 20 crew members at a given university. You want to calculate the probability that their…

A: The question is about sampling distribution.Given :Selected no. of crew members ( n ) = 20Population…

Q: Ted is not particularly creative. He uses the pickup line "If I could rearrange the alphabet, I'd…

A:

Q: The weights of steers in a herd are distributed normally. The standard deviation is 200lbs. and the…

A: Let "X" be the weight of steers in a herd.

Q: We have provided a normal probability plot of data from a sample of a population. In each case,…

A: Requirement for normal distribution: If the plot is roughly linear, then the variable is…

Q: What is the probability a consumer lives within 10 miles of the nearest grocery store and shops at a…

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A: The number of labs is 5.

Q: None

A: To conduct a hypothesis test comparing the proportion of business students at Bayview University who…

Q: The probability of a transformer that has been refurbished at a factory being defective is 0.15. An…

A: Given the probability of a transformer that has been refurbished at a factory being defective =…

Q: Use the data in the following table, which lists drive-thru order accuracy at popular fast food…

A:

Q: An operation manager at an electronics company wants to test their amplifiers. The design engineer…

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Q: The data represent the results for a test for a certain disease. Assume one individual from the…

A: The data represent the results for a test for a certain disease.   Yes No Total Positive 137 18…

Q: IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual…

A: It is given that the IQ scores follow normal distribution with mean 100 and standard deviation 15.…

Q: Examine the image below and then answer all parts of the question under it. Enter your answers as…

A: a) There are 4 yellow objects in 10 objects.So, P(yellow)=410=0.4b) There are 3 hearts in the 10…

Q: Adult men's heights are normally distributed with m 70 inches and s 2.6 inches. What is the…

A: Given,mean(μ)=70standard deviation(σ)=2.6

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A:

Q: The table below shows the probability distribution of job satisfaction scores (1 - 4) for a group of…

A: a. Missing value=0.27b. The expected job satisfaction score for this group of senior executives=…

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

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Q: please answer in text form and in proper format answer with must explanation , calculation for each…

A: (a) Step 1: State the given: raw score 1, x1 = 4raw score 2, x2 = 10population mean, µ =…

Q: The waiting time a customer spends in the airport luggage check-in is a random variable with mean…

A:

Q: Use the data in the following table, which lists drive-thru order accuracy at popular fast food…

A: The total number of orders from restaurant D is 138+16=154.

Q: The weights of steers in a herd are distributed normally. The variance is 40,000and the mean steer…

A: Consider X be the random variable that represents the weights of steers in a herd. X is normally…

Q: please help answer

A: Solution : The given contingency table is     A B C D Total Order accurate 330 266 235 138 969…

Q: Use the data in the following table, which lists drive-thru order accuracy at popular fast food…

A: The total number of orders that are given are  Total order = 326+276+235+140+33+52+40+15 = 1117