CNNBC recently reported that the mean annual cost of auto insurance is 1015 dollars. Assume the standard deviation is 244 dollars, and the cost is normally distributed. You take a simple random sample of 36 auto insurance policies. Round your answers to 4 decimal places. a. What is the distribution of X? X - N( b. What is the distribution of ¤? ¤ - N( c. What is the probability that one randomly selected auto insurance is more than $1040?

Q: S The age of professional racecar drivers is normally distributed with a mean of 28 and a standard…

A:

Q: If the mean of a Binomial distribution is 5, which is the most likely value for its standard…

A: Answer :- Mean of binomial Distribution  = np = 5 Standard Deviation of binomial Distribution =

Q: The mean weight of newborn infants at a community hospital is 6.6 pounds. A sample of seven infants…

A: Sample points are 9.0,7.3,6.0,8.8,6.8,8.4,6.6. Sample size = n = 7.

Q: CNNBC recently reported that the mean annual cost of auto insurance is 993 dollars. Assume the…

A: Given Mean annual cost of auto insurance=μ=$993 Standard deviation =σ=$275 Let X be cost of auto…

Q: 3. In a Math test, the mean score is 45 and the standard deviation is 4. Assuming normality, what is…

A: Since you have submitted two questions, we'll answer the first question. For the second question…

Q: Riana Miren and Trinh are 40 and 57 years old, respectively. Based on a normal distribution with…

A: It is given that  Mean, μ = 49.3 Standard deviation, σ = 11.8 Z-Score, Z = ( X-μ )/σ

Q: A data set is formed by recording the sums in 400 rolls of a pair of a dice. A second data set is…

A: Standard deviation:The standard deviation indicates by how much each observation differs from a…

Q: CNNBC recently reported that the mean annual cost of auto insurance is 968 dollars. Assume the…

A: GivenMean(μ)=968standard deviation(σ)=259sample size(n)=36

Q: CNNBC recently reported that the mean annual cost of auto insurance is 968 dollars. Assume the…

A: GivenMean(μ)=968standard deviation(σ)=259sample size(n)=36

Q: In a distribution exactly normal, 7% of the items are under 35 and 89% are under 63. What are the…

A:

Q: CNNBC recently reported that the mean annual cost of auto insurance is 968 dollars. Assume the…

A: Given data : Mean = 968 dollars Standard deviation = 259 dollars Sample size = 36

Q: Given a distribution with a mean of 90 and a standard deviation of 10, what is the probability of…

A: Given Information: μ=90 σ=10 x1=85 x2=110

Q: The Bank of Connecticut issues Visa and MasterCard credit cards. It is estimated that the balances…

A: a. The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the…

Q: CNNBC recently reported that the mean annual cost of auto insurance is 968 dollars. Assume the…

A: Given information ismean annual cost(μ)=968standard deviation(σ)=259random sample(n)=36

Q: CNNBC recently reported that the mean annual cost of auto insurance is 1002 dollars. Assume the…

A:

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

A: As per guideline expert have to answer first question only dear student please upload other parts…

Q: The depth of the snow in my yard is normally distributed, with a mean of 2.5 inches and a standard…

A: Mean (µ) = 2.5 inches Standard deviation (σ) = 0.25 inches Let X be random variable which represents…

Q: A consumer survey indicates that the average household spends μ = $155 on groceries each week. The…

A: (a) Obtain the proportion of the population spends more than $175 per week on groceries. The…

Q: CNNBC recently reported that the mean annual cost of auto insurance is 958 dollars. Assume the…

A: GivenMean(μ)=958standard deviation(σ)=273sample size(n)=40

Q: Find the standard deviation, σ, for the binomial distribution which has n = 48 and p = 3/5. Round…

A: Given: n = 48 p=35

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 9.6 inches,…

A: Given : Let X be a r.v X : Length of items (in inches)  Mean (μ) = 9.6 S.D (σ) = 1.8

Q: The average full-time faculty member in a post-secondary degree-granting institution works an…

A: In a bell shaped distribution, 68% items falls within one standard deviation of mean, 95% items…

Q: In a normal distribution with mean 3 and variance 49, what are the upper and lower limit scores for…

A: From the given information, μ=3σ2=49σ=7 Given, Pa<X<b=50%PX<a=25%P(X>b)=25%

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 11.6…

A:

Q: The lifespan of a laptop battery is normally distributed. If the mean lifespan of a battery is 4…

A: Let , X be the lifespan of a laptop battery. X follows Normal distribution with , Mean = μ = 4 years…

Q: CNNBC recently reported that the mean annual cost of auto insurance is 1002 dollars. Assume the…

A: We want find sampling distribution and probability  Note:According to bartleby experts question…

Q: A physical fitness association is including the mile run in its secondary-school fitness test. The…

A:

Q: Runzheimer International publishes data on overseas business travel costs. It reports that the…

A: The standard deviation will be obtained as given below:

Q: CNNBC recently reported that the mean annual cost of auto insurance is 1042 dollars. Assume the…

A: As per bartleby guideline expert have to answer first three subpart only dear student please upload…

Q: A physical fitness association is including the mile run in its secondary-school fitness test. The…

A: P(X<348)=?

Q: The Institute for College Access and Success reported that 67% of college students in 2008 graduated…

A: The sample given is,n=85. It is also given that 67% of college students graduated with student loan…

Q: ed for évents held at City- Community theatre are believed to be normally distributed with a mean of…

A: Given data, μ=12,000σ=1000

Q: CNNBC recently reported that the mean annual cost of auto insurance is 991 dollars. Assume the…

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

Q: The probability is 5​% that a student taking the test scores higher than

A: Let X denote the scores of final examination in an introductory statistics course. Given that X…

Q: According to the College Board, the probability that a student forgets to bring their ID with them…

A: Thank you for posting the question. As your question has more than 3 parts, as per the policy, we…

Q: An executive drives from her home to her office in the city. The driving times are normally…

A: Given, Driving time normally distributed with mean 35 and standard deviation 8 minutes.

Q: The time it takes for acrylic paint to dry follows a normal distribution. If the mean is 2 hours and…

A: Solution: Let X be the time it takes for acrylic paint to dry. From the given information, X follows…

Q: an gas mileage for a hybrid car is 56 miles per gallon. Suppose that the gasoline mileage is…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: What is the probability that the jewelry store will have to pay off on its promise?

A:

Q: Given a distribution with a mean of 80 and a standard deviation of 10, what is the probability of a…

A: Given that  Mean=80 , Standard deviation=10 Find  P(X<=65)

Q: The Greenville Power Authority states that the mean monthly energy bill for their customers is $228…

A: Determine between what two values do we expect 99.7% of energy bill’s to fall. The two values of the…

Q: A set of scores in Statistics examination is approximately normally distributed with a mean of 74…

A: Given: The value of mean is, μ=74. The value of standard deviation is, σ=7.9. The objective is to…

Q: CNNBC recently reported that the mean annual cost of auto insurance is 956 dollars. Assume the…

A: As per bartleby guideline expert have to answer first three subpart only dear student please upload…

Q: CNNBC recently reported that the mean annual cost of auto insurance is 992 dollars. Assume the…

A: As per our guidelines we are suppose to do only one question1)GivenMean(μ)=992standard…

Q: In the field of accountancy, times spent studying by students in the week before professional exams…

A: 1. a)  Probability that sample mean exceeds population mean by more than 2 hours is given by :…

Q: A technical assistance service with electronic equipment has that its service time is normally…

A: Given,mean(μ)=80standard deviation(σ)=25

Q: CNNBC recently reported that the mean annual cost of auto insurance is 977 dollars. Assume the…

A: GivenMean(μ)=977standard deviation(σ)=252sample size(n)=36

Q: "An electrical firm manufactures light bulbs that have a length of life that is approximately…

A: Given data,Mean μ=843sd    σ=35n=31Find mean of sampling distribution?

Q: The proportion of Americans who are satisfied with the way things are going in their lives is 82%.…

A: From the given information the sample size is (n) = 100 and the proportion of Americans who re…

Q: CNNBC recently reported that the mean annual cost of auto insurance is 968 dollars. Assume the…

A: