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: The average amount of money spent for lunch per person in the college cafeteria is $6.2 and the…

A: Here, 43 samples are collected. b.) Hence, if the sample mean is denoted by x, then, x~N(μ,σ2n),…

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: Refer to the accompanying table, which describes results from groups of 8 births from 8 different…

A: Given data,

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A:

Q: A survey was conducted two years ago asking college students their top motivations for using a…

A: Given data, Response Old survey New survey frequency Rewards 0.27 112 Low rates 0.23 97…

Q: are normally distributed with

A:

Q: Private nonprofit four-year colleges charge, on average, $26,244 per year in tuition and fees. The…

A: Provided information is, private nonprofit four year college charge, on average $26244 per year in…

Q: 2. Suppose that the mean lifetime of a random sample of 25 batteries produced by a factory is 700…

A: Solution: 2. Let X be the lifetime of a battery. From the given information, X follows normal…

Q: Private nonprofit four-year colleges charge, on average, $27,628 per year in tuition and fees. The…

A: Given Private nonprofit four-year colleges charge, on average, $27,628 per year in tuition and fees.…

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

A:

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

A: As per Bartleby guideline expert have to answer first question three subparts only dear student…

Q: a. What is the distribution of X? X - N( b. What is the distribution of æ? ¤ - N( c. For a single…

A: Here AS PER POLICY I HAVE CALCULATED FIRST 3 SUBPART PLZ REPOST FOR REMAINING

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: The lengths of pregnancies are normally distributed with a mean of 269 days and a standard deviation…

A: Given: μ=269 and σ=15. a)PX≥308=PX-μσ≥308-μσ=PZ≥308-26915=PZ≥2.6=1-PZ<2.6=1-0.9953=0.0047…

Q: At an airline company, according to the records, the mean age of pilots is 36.2 years, and the…

A:

Q: The probability that an individual is right-handed is 0.87. In a class of 100 students, what is the…

A:

Q: Private nonprofit four-year colleges charge, on average, $26,059 per year in tuition and fees. The…

A: Given Mean=26059 Standard deviations=7129

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

A:

Q: ? a. z = 0.91 b. z = -0.91 c. z = 0.43 d. z = -0.43

A: Solution

Q: Assume that the weight of people, measured in pounds, has a normal distribution with a mean of 136…

A: Answer: Given that   ‘x’ is Normally distributed with                 Mean  µ =136       standard…

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: Private nonprofit four-year colleges charge, on average, $27,231 per year in tuition and fees. The…

A: Answer is 31332

Q: The data {9, 5, 5, 9, 2} represent a random sample of the number of days absent from school for five…

A:

Q: The population mean annual salary for plumbers is $49,000.  A random sample of 25 plumbers is drawn…

A: We have given that Mean(µ) = 49000Standard deviations (σ) = 5800n = 24

Q: Private nonprofit four-year colleges charge, on avwrage, $26,093 per year in tuition and fees. The…

A: GivenMean(μ)=26093standard deviation(σ)=6846

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: a. What is the distribution of ¤? ¤ - N( b. For the group of 12, find the probability that the…

A: a. The mean is 160, standard deviation is 22, and sample size is 12. The distribution of x¯ follows…

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

A: As per guidelines expert have to answer first question three subparts only dear student please…

Q: Refer to the accompanying table, which describes results from groups of 8 births from 8 different…

A: xP(x)00.00310.02620.11830.21240.27450.22760.10870.02780.005

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: 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: 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: a. Label the horizontal axis appropriately on the Normal curve at right. b. Find the probability…

A: Here AS PER POLICY I HAVE CALCULATED 3 SUBPART plz REPOST FOR REMAINING PARTS

Q: C recently reported that the mean annual cost of auto insurance is 1017 dollars ion is 249 dollars,…

A: Given data,Mean μ=1017Sd    σ=249n=37

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: Children between the ages of 2 and 5 watch an average of 25 hours of television per week. Assume the…

A: A normal distribution follows a bell shaped curve which is centred at the mean and it is also called…

Q: You play a game of chance that you can either win or lose (there are no other possibilities) until…

A: Probability of losing (p) the game is 0.61 Probability of winning the game = 1- p = 1- 0.61=0.39

Q: Private nonprofit four-year colleges charge, on average, $27,088 per year in tuition and fees. The…

A: a) Consider a random variable X that defines the cost for a randomly selected college.

Q: Many college admissions want to know your class percentage in addition to your grades.  The grades…

A: Consider that a random variable x, defines the grades.

Q: What type of distribution is this : you measure the GPA of every student in a high school to the…

A: For Normal distribution, the mean, median and mode are same. Also, the normal curve is symmetric to…

Q: It is commonly believed that the mean body temperature of a healthy adult is 98.6° F. You are not…

A: Answer Given,100.1,96.8,98.7,100,99.1,98.3,97.5,100.9,99.1,100,98.1,100.1The sample size [n] =12