CNNBC recently reported that the mean annual cost of auto insurance is 982 dollars. Assume the standard deviation is 247 dollars. You take a simple random sample of 99 auto insurance policies. Find the probability that a single randomly selected value is less than 993 dollars. P(X < 993) =  Find the probability that a sample of size n=99n=99 is randomly selected with a mean less than 993 dollars. P(M < 993) =

Q: The amount of time it takes students to complete a biology exam is normally distributed with a…

A: Given that, The random variable X is the amount of time takes students to complete a biology exam It…

Q: The average score of all golfers for a particular course has a mean of 76 and a standard deviation…

A:

Q: ample of 3000 persons were surveyed for their walght in pounds, the mean weight is 135 lbs with a…

A:

Q: The average weight of the leatherback sea turtle is 880 lbs with a standard deviation of 44 lbs.…

A: Given  Mean=μ=880, standard deviation=σ=44  P(X&gt;1000)=?  Nahi te: According to Bartleby…

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

A: Solution: Let X be the adults IQ score has normally distributed with mean μ=100 and standard…

Q: Suppose the mean amount of cholesterol in eggs labeled “large” is 186  milligrams, with standard…

A: Given that  μ = 186 , ? = 7 , n = 144

Q: About 78​% of all female heart transplant patients will survive for at least 3 years. Ninety female…

A: Given information- Population proportion, p = 0.78 Sample size, n = 90 The sample proportion is- We…

Q: The Intelligence Quotient (IQ) test scores for adults are normally distributed with a population…

A: Given that.   X~N( μ , ?^2 )   μ=100     , ?=25  , n=60   Z-score =( x - μ )/?

Q: The average annual income of 10 million people working in Manila is P100,000. The standard deviation…

A: It is given that, Population mean (μ) = 100,000 Population standard deviation (σ) = 2500 Sample size…

Q: A study conducted by the Center for Population Economics at the University of Chicago studied the…

A:

Q: Scores on a test have a mean of 8181 and a standard deviation of 1313. Michael has a score of 9393.…

A:

Q: A researcher polled a sample of 1020 adults in the year 2010, asking them how many hours per week…

A: Given Information :  A researcher polled a sample of 1020 adults in the year 2010, asking them how…

Q: A simple random sample of 64 observations was taken from a large population. The sample mean and the…

A:

Q: a dataset with a mean of 60 and a standard deviation of 8, how many observations are expected to…

A: The mean of a dataset is The standard deviation is The data is considered to follow normal…

Q: The IQ’s in a certain population are normally distributed with a mean score of 104 and a standard…

A: It is given that the scores follow normal distribution with mean 104 and standard deviation 14.…

Q: CNNBC recently reported that the mean annual cost of auto insurance is 1032 dollars. Assume the…

A: Mean()=1032standard deviation()=164sample size(n)=78

Q: Assume that an intelligence test scores are distributed normallt with a mean of 100 and a standard…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: CNBC recently reported that the mean annual cost of auto insurance is $966. Assume the standard…

A: Given : mean = 966 Standard deviation = 272

Q: Suppose that the number of customers who enter a supermarket each hour is normally distributed with…

A: Let X denote the number of customers who enter a supermarket each hour and it follows normal…

Q: The average score of all golfers for a particular course has a mean of 71 and a standard deviation…

A: Solution: Let X be the score of golfer for a particular course. From the given information, X has a…

Q: Suppose that a recent article stated that the mean time spent in jail by a first–time convicted…

A: Here is given that mean time is 3.5 and sample is 45. Sample mean is 3 and sample variance is 1.4.…

Q: . Which method is preferred if the procedure must be completed within 27 minutes? Which procedure is…

A: The times for a medical procedure for two methods are given. For method A, Mean = 25 minutes sd = 8…

Q: the mean IQ of tweleve year old boys in a school district is 118; the standard deviation is 18. if a…

A: Obtain the probability that the mean of the sample is greater than 120. The probability that the…

Q: The national average SAT schore was found to be a 2140 with a standard deviation of 892. If the…

A:

Q: CNNBC recently reported that the mean annual cost of auto insurance is 1006 dollars. Assume the…

A: Suppose that the random variable X defines the annual cost of auto insurance. Mean of X is μ=1006…