A test has a mean soore of 150 and a standard deviation of 12. Scores are normally distributed. What is the probability that a test taker has a soore less than 160? OA 2033 O B. 2967 OC. 8333 OD. 7967 OE 7033

Q: The average GPA at the University of North Carolina is 3.2, with a standard deviation of 0.3. Assume…

A: Given that.   X~N( μ , ?^2 )   μ=3.2     , ?=0.3   Z-score =( x - μ )/?

Q: MCAT scores are normally distributed with an average of 500.5 and a standard deviation of 10.5. What…

A: Given Information: μ=500.5σ=10.5n=100

Q: Assume that​ men's heights have a distribution that is symmetrical and​ unimodal, with a mean of 70…

A: We hava given that,  Let X be the men's height from Symmetrical and distribution with mean (μ) = 70…

Q: Assuming that the scores of the student in a test are normally distributed with the mean of 40 and…

A: Given data mean =40 ,standard deviation =6

Q: a) the distribution of the mean? b) the probability that the sample mean is less than 15.6 mm? c)…

A: Let , X→N(μ=12 , σ=4) , n=16 Our aim is to find the following :  a) the distribution of the mean? b)…

Q: The long-distance calls made by South Africans are normally distributed with a mean of 16.3 minutes…

A: Given,mean(μ)=16.3standard deviation(σ)=4.2

Q: Q2: The diameter of the dot produced by a printer is normally distributed with a mean diameter of…

A: Given : Diameter of the dot is normally distributed with mean 0.002 and standard deviation 0.0004

Q: A distribution of integer scores is approximately normally distributed with a mean of 147 and a…

A: It was stated that a distribution of integer scores is approximately normally distributed. The mean…

Q: Suppose that the mean chest size of certain soldiers is 39.8 inches with a standard deviation of 2.2…

A: (d)   Determine the value of chest size measured at least as large as 75% of all Scottish…

Q: The length of time it takes to find a parking space at 8am follows a normal distribution with a mean…

A:

Q: A set of scores has a mean of 5.8 and a standard deviation of 2.3. Calculate the z scores for the…

A: Given Data: Meanμ=5.8 Standard deviationσ=2.3   To Find: z-score for a) 2.1 b) 5.7 c) 7.3 d) 12.4

Q: The tip percentage at a restaurant has a mean value of 18% and a standard deviation of 6%. What is…

A: Given Information: μ=18 , σ=6 and n=15

Q: The IQ scores of adults are normally distributed with a mean of 100 and a standard deviation of 15.…

A: Consider X be a random variable which follows normal distribution indicating the IQ scores of…

Q: The lengths of human pregnancies are normally distributed with a mean of 268 days and a standard…

A: Solution: Let X be the length of human pregnancy. From the given information, X follows normal…

Q: A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean…

A: We have given that  The ratings are normally distributed with mean 200 and standard deviation 50.

Q: The weight of a certain population of young helfers is approximately normally distributed with a…

A:

Q: The tip percentage at a restaurant has a mean value of 18% and a standard deviation of 6%. What is…

A: Obtain the approximate probability that the sample mean tip percentage for a random sample of 40…

Q: A midterm exam has a mean of 76.0 and a standard deviation of 8.0. If any student with a z-score of…

A:

Q: A population has a mean of 80 and a standard deviation of 7. A sample of 49 observations will be…

A:

Q: The scores from a state standardized test have a​ bell-shaped distribution with a mean of 100 and a…

A: By using empirical rule we know…

Q: The spending at Target is distributed normally with a mean spending of $47.67 and a standard…

A:

Q: A normal distribution has a mean of u standard deviation of o = 12. For each of the follow- ing…

A: Given info: Here, mean, µ = 30 and σ = 12

Q: A test has a mean score of 150 and a standard deviation of 12. Scores are normally distributed. What…

A: Let X denote the test score and follows normal distribution with mean of μ=150 and standard…

Q: The symbol oz represents the standard deviation of a sample of size n. True O False

A: Answer : B. False

Q: The weights of babies born in a hospital show a normal distribution with a mean of 3.3 kg and a…

A:

Q: Find the indicated probability. IQ scores are known to be normally distributed with a mean of 100…

A: Given, Mean = 100 Standard deviation = 15   The objective is to find the probability that a randomly…

Q: A normal distribution has a mean of u=54 and a standard deviation of o=6, what is the probability of…

A: Let "X" be the raw score.

Q: The volume of cracker boxes are normally distributed, with a mean of 7 oz and a standard deviation…

A: It is given that:

Q: If P(−b<z<b)=0.98P(-b<z<b)=0.98, find b.

A: Given that Z ~ N(0, 1) And P(-b &lt; Z &lt; b) = 0.98

Q: The mean output of hamburger patty of the Southern Valley Meat Corporation is 120,000 pounds daily,…

A: Given,mean(μ)=120,000standard deviation(σ)=40,000

Q: 10 percent of the students in a class of 100 are planning to go to graduate school. The standard…

A: It is given that n=100 and p=0.10.

Q: "The weights of 1,000 children, in average, is 46kg with standard deviation of 11kg. Suppose the…

A: Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: Assume that thermometer readings are normally distributed with a mean of 0°C and a standard…

A: Given: Thermometer readings follows standard normal distribution.

Q: The number of pages produced by a fax machine in a busy office is normally distributed with a mean…

A: Normal distribution

Q: Find the indicated probability. The incomes of trainees at a local mill are normally distributed…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 1100,…

Q: A normal distribution has a mean of u=54 and a standard deviation of o=6, what is the probability of…

A: Mean = 54 Standard deviation = 6 Sample size, n = 36

Q: The average number of hours worked per week for college students is 27, and the standard deviation…

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

Q: A sample of 80 graduates is drawn. a) By the CLT, p^ the sample proportion of college students that…

A: Given that  n=80 , p=68%=0.68 , q=1-p=1-0.68=0.32 Note: According to bartleby experts question…

Q: The volumes of soda in quart soda bottles are normally distributed with a mean of 32.3 oz and a…

A: It is given that the mean is 32.3 and standard deviation is 1.2.

Q: MCAT scores are normally distributed with a mean of ? ​​= 501.5 and a standard deviation of ? =…

A: Given: Population mean μ = 501.5 Population standard deviation σ = 10.7 Formula Used: Z-score = X-μσ

Q: The line width for semiconductor manufacturing is assumed to be normally distributed with a mean of…

A: X: the line width for semiconductor manufacturing. X has normal distribution X~N(μ,σ) μ=0.45…

Q: A company sells sunscreen in 500 milliliter (ml) tubes. In fact, the amount of lotion in a tube…

A: (a)

Q: If the value of goods declared by all Canadians returning to Canada at the Pigeon River border…

A: According to guidelines we solve first question when given questions are different.

Q: e that the heights of women are normally distributed with a mean of 63.6 inches and a standard…

A: Mean =63.6Standard deviation = 2.5Sample size = 100

Q: The volume of cracker boxes are normally distributed, with a mean of 7 oz and a standard deviation…

A: Obtain the standard z-score for  equals 6.5. The standard z-score for equals 6.5 is obtained below:…

Q: The Wechsler Adult Intelligence Scale is a common "IQ test" for adults. Scores for people over age…

A:

Q: Find the indicated probability. IQ scores are known to be normally distributed with a mean of 100…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 15 X~N (100, 15) Here X be a…

Q: A survey of 1000 men ages 20 to 30 found that their heights were normally distributed, with a mean…

A: From the provided information, Mean (µ) = 65 inches Standard deviation (σ) = 2.5 inches

Q: The volume of cracker boxes are normally distributed, with a mean of 7 oz and a standard deviation…

A: It is given that:

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.