Assume that SAT scores are normally distributed with a mean of 2  and a standard deviation of 23. If 1 SAT score is randomly selected find the probability that it is greater than 1500.   If 100 SAT scores are randomly selected, find the probability that they have a mean greater than 1500.   If 1 SAT score is randomly selected find the probability that it is between 1400 and 1500.

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

A: From the provided information, Mean (µ) = 45 Standard deviation (σ) = 20 X~N (45, 20) Sample size…

Q: Activity 2 of 3 What percent of Braves players fall between 230 and 270? O A. 95.4% O B. 47.7% O C.…

A: Answer Option c = 68.2% is correct

Q: The mean IQ of 500 data science students is 151  and the standard deviation is 15. Assuming that the…

A:

Q: A student has taken a 50-point exam and wants to know how his score of 38 compares to the scores of…

A: It is given that Mean = 40 Standard deviation SD = 4 Score X = 38

Q: Suppose the mean height in inches of all 9th grade students at one high school is estimated. The…

A: Given that  Sample size n =9 Population standard deviation =3

Q: Find the standard deviation of the observations 5, 11, 18, 25 and 41, using mutual differences…

A: Given: data data values  Xi: 5,11,18,25,41  Then to find standard deviations using mutual difference…

Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

A:

Q: The test scores in a class are normally distributed with a mean score of 77. if the standard…

A: The distribution of test score are normally distributed with mean of 77. Now consider the standard…

Q: The chloride concentration in the blood (mmol / liter) averages 104 with a standard deviation of 5.…

A: Given Data: Let X represent the random variable   X~ Normal (104, 52) n=200 Therefore, X¯ ~ Normal…

Q: Suppose that the distribution of the scores of students in Statistics Assignment 1 is roughly…

A: GivenMean(μ)=85standard deviation(σ)=5sample size(n)=16

Q: The mean and standard deviation of a set of 100 observations were Worked out as 40 and 5…

A: We have given that Number of observations(n)=100  Corrected mean=40 Standard deviation=5  Mistaken…

Q: Suppose the mean height in inches of all 9th grade students at one high school is estimated.

A: Population standard deviation, σ =3 inches Sample size n=6

Q: 5 students were given a test. The average and standard deviation of the 5 scores were found to be…

A:

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

A: We have given information with the usual notation, Let X denote the score of golfers for a…

Q: You want to determine the probability that when seven consumers are randomly selected, exactly two…

A: 1. n = 7, x = 2, p = 0.45, q = 0.552. Mean, μ = 3.15    Standard Deviation, σ = 1.31623. P(X = 2) =…

Q: Lazurus Steel rporation produces iron rods that are supposed to be 36 inches long. The machine that…

A:

Q: The Atlanta Braves baseball team has a mean batting average of 250 with a standard deviation of 20.…

A: We have to find given probability.

Q: William revealed that he makes 1,000,000 dollars annually. The average annual income in the country…

A:

Q: It takes an average of 10.2 minutes for blood to begin clotting after an injury. An EMT wants to see…

A: From the provided information, The hypotheses are as follow: H0: µ = 10.2 H1: µ < 10.2 The test…

Q: once, so that they na standard deviat

A: Alex cuts four sticks one at a time and their lengths are independent  with mean = 8 and Standard…

Q: You are going to convert raw score to z scores of -2, -1, 0, + 1, +2. The raw score is 8, 10, 17,…

A: We have given that the raw score is 8, 10, 17, 22, 6, 20, 21, 22, 19, 30. z-score = ( X-Mean )/S.D

Q: Lazurus Steel Corporation produces iron rods that are supposed to be 36 inches long. The machine…

A:

Q: If the standard deviation of a data is 14.50 and if each value of the data is decreased by 5, then…

A: Given : Old standard deviation = 14.50

Q: Entry to a certain university is determined by a national test. The scores on this test are normally…

A:

Q: MAKE SURE YOU SELECT 2 ANSWERS FOR THIS QUESTION - Type of test and hypothesis. A meteorologist…

A: Given population mean μ=0.46  Population standard deviations σ=0.12

Q: The average score of all golfers for a particular course has a mean of 64 and a standard deviation…

A:

Q: The probability of getting a reading between 1.50°C and 2.25°C is (Round to four decimal places as…

A: The probability of getting a reading between 1.50°C and 2.25°C is,…

Q: The highway mileages of 147 cars are in a file named CARS2.+ These cars are 2003 models. Find the…

A: Mean Formula The mean formula is defined as the sum of the observations divided by the total number…

Q: An exam is given to all three people in an accounting department.  On this exam, the mean is 102 and…

A: According to the given information, we have Mean = 102 Standard deviation = 7.5

Q: Lazurus Steel Corporation produces iron rods that are supposed to be 36 inches long. The machine…

A:

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

A: Given,mean(μ)=105standard deviation(σ)=20

Q: ow that a random individual will fall between 107 and 103 .if the mean IQ is 100 the standard…

A: Consider a random variable X which represents IQ of the individual.    X follows normal distribution…

Q: A requirement for business graduate school is the GMAT.  The GMAT is normally distributed with a…

A: Given,mean(μ)=527standard deviation(σ)=112

Q: s 6 hours a day. If college students were randomly selected, find the probability that the mean…

A: Let X be the random variable from normal distribution with mean (μ) = 6 hours and standard deviation…

Q: Find the area of the shaded region. The graph to the right depicts scores of adults, and those…

A: normal distribution curve is given μ = 100σ = 15area shaded to the left of 120.

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.