NNBC recently reported that the mean annual cost of auto insurance is 979 dollars. Assume the standard deviation is 261 dollars, and the cost is normally distributed. You take a simple random sample of 40 auto insurance policies. Round your answers to 4 decimal places. What is the distribution of XX? XX ~ N(,) What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) What is the probability that one randomly selected auto insurance is more than $929? a simple random sample of 40 auto insurance policies, find the probability that the average cost is more than $929.

Q: Suppose Kristen is researching failures in the restaurant business. In the city where she lives, the…

A: Given: n=98p=0.67 It is given that the sample is independent and the probability of failure within…

Q: Suppose the mean income of firms in the industry for a year is 100 million dollars with a standard…

A: Given,mean(μ)=100Standard deviation(σ)=15

Q: CNNBC recently reported that the mean annual cost of auto insurance is 981 dollars. Assume the…

A: Let X be the annual cost of auto insurance. It is given that X is normally distributed with mean 981…

Q: The mean incubation time of fertilized eggs is 21 days. Suppose the incubation times are…

A: A continuous random variable X is said to follow Normal distribution with parameters μ and σ2 if its…

Q: The average THC content of marijuana sold on the street is 10.1%. Suppose the THC content is…

A: It is given that the mean is 10.1 and standard deviation is 2.

Q: Determine the standard deviation of the number of randomly selected faculty that will have blood…

A: n = 48 here researcher goes to a small college of 406 faculty, 20 of which have blood type…

Q: The average time to run the 5K fun run is 20 minutes and the standard deviation is 2.3 minutes. 9…

A: Given : Mean=20 SD=2.3 n=9 X~N ( 9, 2.3)

Q: CNNBC recently reported that the mean annual cost of auto insurance is 1030 dollars. Assume the…

A: 1. The distribution of X is, X~N($1,030, $210).

Q: Suppose that the average pop song length in America is 4.43 minutes with a standard deviation of…

A: The approximate probability that the average song length of a sample of 27 songs will be less than…

Q: he average amount of money spent for lunch per person in the college cafeteria is $6.57 and the…

A:

Q: The amount of coffee that people drink per day is normally distributed with a mean of 15 ounces and…

A: Note:Thank you for the question. Since multiple subparts are posted, according to our policy, we are…

Q: The average THC content of marijuana sold on the street is 10.2%. Suppose the THC content is…

A:

Q: is the distribution of XX? XX ~ N(,) What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) For a single…

A: According to guidelines we solve first three subparts when given multiple subparts.

Q: 77% with a standard deviation of 10%. What is the probability that the mean mark of four randomly…

A: here given, marks in days and evening class is normally distributed  so here sampling distribution…

Q: What is the distribution of XX? XX ~ N(,) What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) What is the…

A: We have given that  Mean, μ = 962 Standard deviation, σ = 271 Sample size, n = 8   Note: According…

Q: The average THC content of marijuana sold on the street is 10.2%. Suppose the THC content is…

A: It is given that  Mean, μ = 10.2% Standard deviation, σ = 1% Z-Score, Z = ( X - μ )/σ   Note:…

Q: The mean height of an adult giraffe is 17 feet. Suppose that the distribution is normally…

A:

Q: he average number of miles (in thousands) that a car's tire will function before needing replacement…

A:

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: The percent of fat calories that a person consumes each day is normally distributed with a mean of…

A:

Q: uppose that a category of world class runners are known to run a marathon (26 miles) in an average…

A: Let X be the random variable from normal distribution with mean (μ) = 149, standard deviation (σ) =…

Q: The average number of miles (in thousands) that a car's tire will function before needing…

A: Step 1: Given Data: Mean (μ) = 64 (in thousands of miles)Standard deviation (σ) = 18 (in thousands…

Q: Suppose the mean income of firms in the industry for a year is 30 million dollars with a standard…

A:

Q: The lengths of pregnancies are normally distributed with a mean of 267 days and a standard deviation…

A: Let  x denote the length of pregnancies. Given that the lengths of pregnancies are normally…

Q: The patient recovery time from a particular surgical procedure is normally distributed with a mean…

A: Since you have asked multiple sub parts of the question, we will solve first three sub parts for…

Q: The average amount of money spent for lunch per person in the college cafeteria is $6.87 and the…

A: Note: Hi! Thanks for posting the question. Since there are more than three sub-part questions, we…

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: Hello there! there are more than three subparts in the question. According to our policies we cannot…

Q: The average amount of money spent for lunch per person in the college cafeteria is $7.01 and the…

A:

Q: The points scored by teams in the first round of the Statistics Games have a mean of 135 points and…

A: Given n=36, μ=population mean=135, σ=27, x̄=sample mean=143

Q: The points scored by teams in the first round of the Statistics Games have a mean of 135 points and…

A:

Q: NBC recently reported that the mean annual cost of auto insurance is 1037 dollars. Assume the…

A: According to the given information in this question We need to solve three subparts according to…

Q: CNNBC recently reported that the mean annual cost of auto insurance is 984 dollars. Assume the…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: minutes and a standard deviation of 18 minutes. Suppose one person at the hot springs is randomly…

A: The probability that a randomly selected person at the hot springs stays longer then 59 minutes.…

Q: The average THC content of marijuana sold on the street is 10.9%. Suppose the THC content is…

A: a. Suppose a random variable X defines the THC content for a randomly selected bag of marijuana that…

Q: Monthly cell phone bills for residents of a city have mean €60 and standard deviation €12. Simple…

A: Given information: μ=60σ=12n=100

Q: CNNBC recently reported that the mean annual cost of auto insurance is 966 dollars. Assume the…

A: Note: Thank you for the question. Since multiple subparts are posted, according to our policy, we…

Q: The dataset below is based on a survey of 100 randomly selected travelers who were asked, “How many…

A: 2 or Fewer 3 to 5 Trips 6 to 8 Trips 9 or More Trips Total Male 17 10 20 3 50 Female 19 21 8 2…

Q: Assume that the amount of weight that male college students gain during their freshman year are…

A: NNote: this probability value calculated from standard normal distribution table

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.