5. The mean weight of 10 year old boys is 85 pounds the standard deviation is 12 pounds.. The distribution of scores is normal. Find the probability that a ten year old boy weighs: a. Under 85 b. Between 73 and 97 c. Over 100

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

A:

Q: (a)What is the probability that at least 5 of the students are first generation college students?…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: 8. The reading speed of sixth-grade students is approximately normal, with a mean speed of 135 words…

A:

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: d) What is the probability that the number of drivers will be 10 or more? e) Find the mean and the…

A:

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: In the right distribution If the mode = 85 and the meadian = 45, then the .... mean equal to

A: Givenmode=85median=45

Q: A. Missouri has an inmate suicide rate of 12. How many standard deviations from the national mean is…

A: A. The z score formula is, z=x-μσ In the formula x is defined as random variable, μ is population…

Q: A pharmaceutical company claims that a drug is effective in treating 90% of people having severe…

A: It is given that the random variable follows a binomial distribution with n=6 and p=0.9.

Q: The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally…

A:

Q: The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally…

A:

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

A:

Q: Suppose you sample one value from a uniform distribution with a = 0 and b = 50. a. What is the…

A: Solution: Let X~U(a=0,b=50) The probability density function of X is f(x)=1b-a=150;  0<x<50…

Q: The amount of soda in a randomly selected bottle varies according to a normal distribution with mean…

A: From the given information,   Mean = 7 Standard deviation = 8   The objective is to find the…

Q: Based on a recent report, the cost of healthcare is $8,086 per person in the United States. Suppose…

A: Given : Population Mean,μ = 8086.0 Population Standard Deviation,σ = 2500.0 sample…

Q: (d) What is the probability that the number of drivers will be within 2 standard deviations of the…

A: Let X=the number of drivers X follows a Poisson distribution with mean= 20 So the standard…

Q: The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally…

A: GivenMean(μ)=1252standard deviation(σ)=129

Q: Given a normal distribution with mean = 100 and standard deviation = 10, what is the probability…

A: The distribution of X is a normal distribution as follows X~N(100, 10)

Q: In the right distribution If the mode = 85 and the meadian = 45, then the .. mean equal to .....

A: Given: Mode = 85 Median = 45

Q: n a large section of a statistics​ class, the points for the final exam are normally​ distributed,…

A: Note: Since you have posted a question with multiple subparts, we will solve the first three…

Q: The price of lunch at the mall has a mean of $5.00. The standard deviation is $1.50. What is the…

A:

Q: A banks loan officer rates application for credit. The ratings are normally distributed with a mean…

A:

Q: a. What is the mean of the time interval? b. What is the standard deviation of the time interval? c.…

A: From the provided information, The probability density function of uniform distribution can be…

Q: Assume that IQ scores are normally distributed, with a mean of 100 points and a standard deviation…

A:

Q: According to government data, the probability that a woman between the ages of 25 and 29 was never…

A:

Q: The blood cholesterol levels of men age 55 to 64 are approximately Normal, with mean 222 milligrams…

A: 4. Given that μ=222σ=37 (a) The percent of these men have high cholesterol is,…

Q: 20. The length of adult parakeets is normaly distributed. If the mean length is inches with a…

A: Given that, Mean = 8 Standard deviation = 0.25

Q: ccording to the National Association of Colleges and Employers, the 2015 mean starting salary for…

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: The mean gas mileage for a hybrid car is 57 miles per gallon. Suppose that the gasoline mileage is…

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

Q: 14) Find the score that separates the top 80% from the bottom 20% if the Mean is 100 and the…

A: Given information Mean (µ) = 100 Standard deviation (σ) = 26 The score that separates the top 80%…

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: 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: a) Find the standard deviation. b) What is the percentage of students who have scored less than 72?…

A: Given that Number of students who have scored more than 80 = 480 Let X denote scores of the…

Q: In a sample of size 36, the sample mean was found to be 54.6. If the probability of getting a sample…

A: Given : In a sample of size 36, the sample mean was found to be 54.6.

Q: 12. The heights of male high school students are normally distributed with mean of 64 in and a…

A: From the provided information, Mean (µ) = 64 Standard deviation (σ) = 3.2 X~N (64, 3.2) Here X be a…

Q: According to a survey of the top 10 employers in a major city in the Midwest, a worker spends an…

A: From the given information, μ=413 and σ=26.8 The variable time spent is approximately normally…

Q: The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally…

A:

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: According to a survey of the top 10 employers in a major city in the Midwest, a worker spends an…

A:

Q: d) What is the standard deviation for the number of adult Americans out of the 20 we would expect to…

A: We have given that,  X be the random variable from Binomial distribution with probability of success…

Q: The mean and standard deviation of a population are 200 and 20, respectively. What is the…

A:

Q: (d) What is the probability that chloride concentration differs from the mean by more than 1…

A: Here AS per givens note I have calculated d,e, f parts Here mean = 104 Standard deviation  = 5

Q: The amount of cereal in a carton is listed as 18 ounces. The cartons are filled by a machine, and…

A:

Q: Suppose you sample one value from a uniform distribution with a =0 and b= 50. a. What is the…

A: Let X be a random variable which follows uniform distribution with probability distribution function…

Q: The annual per capita consumption of bottled water was 33.6 gallons. Assume that the per capita…

A:

Q: The mean gas mileage for a hybrid car is 57 miles per gallon. Suppose that the gasoline mileage is…

A: Let X is the gas mileage for a hybrid car. X~Normalμ=57,σ2=3.52

Q: Assume that IQ scores are normally distributed, with a mean of 100 points and a standard deviation…

A:

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.