Find the probability that a sample of 18 has a sample mean below 32. The population mean is 24 and the standard deviation is 7.

Q: On a standard measure of hearing ability, the mean is 300 and the standard deviation is 20. Give the…

A: Given data ,Mean u=300S.D σ=20

Q: Given a normal distribution with a mean of 150 and a standard deviation of 10, what is the…

A: Given,   Mean = 150 Standard deviation = 10

Q: A manufacturer produces widgets that are packaged in boxes of 250. The probability of a widget…

A: Binomial distribution : A Binomial is a type of distribution which has two possible outcomes. i.e.,…

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

A:

Q: 14. The golf scores for a school team were normally distributed with a mean of 68 and a standard…

A:

Q: Find the standard deviation, , for the binomial distribution which has the stated values of n and p.…

A: The standard deviation for the binomial distribution is given by,

Q: Suppose a normal distribution has a mean of 98 and a standard deviation of 6. What is P(x2 104)? A.…

A: We have given that.   X~N( μ , ?^2 )   μ=98   , ?=6   Z-score =( x - μ )/?

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: Given a distribution that has a mean of 37 and a standard deviation of 12, calculate the probability…

A:

Q: For the binomial​ distribution, which formula finds the standard​ deviation?

A: Consider the terms for any binomial distribution.

Q: A researcher reports survey results by stating that the standard error of the mean is 20.The…

A:

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

A:

Q: A researcher wishes to determine how much money per week is spent on groceries in a small Western…

A: Given : ME< 3.0 σ= 18.0 At 98.0 % confidence level , z score= 2.326 Need to find the minimum…

Q: A population is normally distributed with a mean of 50 and a standard deviation of 10. Find the…

A: Given data,Mean μ=50sd    σ=10P(X<44)=?

Q: Suppose that in College Entrance Test, the cutoff score for passing is 85. If the mean of the test…

A:

Q: Given that the population of women's height has a mean of 63.6 inches and a standard deviation of…

A: Hello. Since your question has multiple, we will solve first question for you. If you want remaining…

Q: The population standard deviation and sample standard deviation are of the same value if the…

A: We want to tell you above statement is true or false

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 commuting time for a student to travel from home to a university campus is Normally distributed…

A: Let X be the commuting time for a student to travel from home to a university campus is Normally…

Q: Find the probability that a randomly selected year of rain in Sydney, Australia has a yearly…

A: Given Population mean μ=137, population standard deviations σ=69, Let X be the rain in Sydney Note:…

Q: has averaged 7.48 mg/L with a standard deviation of 1.6 mg/L. If 10 students measure the sulfate in…

A: Given: sample size, n = 10Mean, μ =7.48std. deviation, σ = 1.6

Q: On an exam, Tom scores 12 points above the mean and has a z-score of z = +2.00. The standard…

A:

Q: Given a normal population whose mean is 50 and whose standard deviation is 5. Find the probability…

A: Let X be the random variable. It is given that X is normally distributed with mean 50 and standard…

Q: Regardless of the kind of workout a gym goer does, the mean time spent on the treadmill is 45…

A: According to the given information, we have Mean = 45 Standard deviation = 15 Sample size, n = 36

Q: The heights of strawberry plants are Normally distributed with a mean of 12 inches and a standard…

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

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: Suppose that the scores of a history test are normally distributed with a mean of 565 and a standard…

A: As per Bartleby guideline expert have to answer first three subparts only..

Q: The results of a nationwide aptitude test in mathematics are normally distributed with 80 as the…

A: Solution

Q: On a mathematics test in a high school, scores are normally distributed with a mean of 77 and a…

A: Given that.   X~N( μ , ?^2 )   μ=77     , ?=16.8   Z-score =( x - μ )/?

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: The final score for a mathematics exam is normally distributed, with an average score (µ) of 57 and…

A: GivenMean(μ)=57standard deviation(σ)=9.25

Q: Assuming you obtained a random sample of blood glucose levels from 32 individuals from a population…

A: It is given that the mean is 120 and the standard deviation is 15.

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: A study found that the heights of college males follow a normal distribution with a mean of 70…

A: Given information- Mean height, μ = 70 inches Standard deviation, σ = 2.5 inches We have to find the…

Q: Suppose you sample one value from a uniform distribution with a = 0 and b = 20. a) What is the…

A: Let the random variable X follows uniform distribution on interval [a = 0, b= 20]   The PDF of…

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: A population has a mean of 180 and a standard deviation of 24. A sample of 64 observations will be…

A: Given Data: Let X represent the random variable Mean=180 SD=24 n=64

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: The sample mean and sample standard deviation of all San Francisco student scores on the most recent…

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Q: What is the z-score of x = 3 if it is 2 standard deviation to the left of the mean? O -3 O -2 O -1 O…

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: 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 population has a mean of 120 and a standard deviation of 12. The sample size of your sampling…

A: The provided information are: Population mean (µ) = 120 Population standard deviation (σ) = 12…

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

A:

Q: The mean is µ = 15.2 and the standard deviation is Η = 0.9. Find the probability that X is between…

A:

Q: Given a test that is normally distributed with a mean of 100 and a standard deviation of 12, find:…

A:

Q: The IQ scores of a large group of students are approximately normally distributed with a mean of 100…

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Q: c. What is the probability that exactly ten of the 45 luxury cars sold are silver? d. What is the…

A: It is given that n=45 and p=0.191.

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.