CNNBC recently reported that the mean annual cost of auto insurance is 982 dollars. Assume the standard deviation is 202 dollars. You take a simple random sample of 83 auto insurance policies. Find the probability that a single randomly selected value is less than 981 dollars. P(X < 981) =  Find the probability that a sample of size n=83n=83 is randomly selected with a mean less than 981 dollars. P(M < 981) =  Enter your answers as numbers accurate to 4 decimal places. Submit QuestionQuestion 1

Q: What is the probability that a first grade classroom of 20 students who are chosen randomly from the…

A: Given Information: Mean μ=100 Standard deviation σ=15 Sample size n=20

Q: Assume that adults have IQ scores that are normally distributed with a mean of 105 and a standard…

A:

Q: Find the probability that the sample mean is between 40 and 50. Sample size is 36 are drawn randomly…

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Q: According to the Department of Education, 60% of college students enjoy taking Statistics. Suppose…

A: Let  X be the number of students who enjoy taking Statistics in a sample of 200. Given n = 200…

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A: n=7 Data: 1792,1666,1362,1614,1460,1867,1439

Q: Scores for a standardized test are normally distributed with a mean of 1200 and a standard…

A: given data μ = 1200σ = 60 normal distributionn = 64P(1200&lt;x¯&lt;1214) = ?

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A: given data μ=200σ=9normal distribution P(200&lt;x&lt;225)=?

Q: Tiger Woods hits an average driver 287.2 yards with a standard deviation of 24.6 yards. What is the…

A: The probability value is calculate by means of standard normal variate with the random variable,…

Q: Using the formulas, calculate the (i) mean and (ii) standard deviation of X.

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A: It is given that  Mean, μ = 200 Standard deviation, σ = 9 Z-Score, Z = ( X - μ )/σ

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A: 1] Mean μ=400 2] standard deviation σ=75 3] n=25 4] μx¯=400σx¯=σn=7525=15

Q: The average time a person spends shopping in a grocery store is 43 minutes.  If the time is normally…

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A: Given: Mean μ = 95.9 Standard deviation σ = 15.6 Formula Used: Z-score: Z = X-μσ

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A:

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

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Q: Assume IQ scores for adults are normally distributed with a mean of 100 and a standard deviation of…

A:

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A:

Q: The average number of minutes per week that teenagers spend texting is 250.0. Assume the standard…

A: Normal distribution is a continuous distribution which has many real life applications. Normal curve…

Q: A population has a mean of 75 and a standard deviation of 15. You randomly sample 9 from the…

A: