Use the normal distribution of fish lengths for which the mean is 8 inches and the standard deviation is 2 inches. Assume the variable x is normally distributed. left parenthesis a right parenthesis If 400 fish are randomly​ selected, how many would you expect to be shorter than 6 ​inches?

Q: Use the magnitudes, rounded to two decimal places, of the 100 earthquakes included in the…

A: The provided earthquake data was rearranged and divided into class intervals based on the frequency…

Q: The mean and Standard deviation of a distribution are 90 and 6.5 respectively. Find the coefficient…

A:

Q: The weights of college students at a particular college has a normal distribution with a mean of 126…

A: Let random variable X represents the weights of college students at a particular college.…

Q: Use the normal distribution of SAT critical reading scores for which the mean is 505 and the…

A:

Q: ample of 3000 persons were surveyed for their walght in pounds, the mean weight is 135 lbs with a…

A:

Q: The time students take to complete an exam follows a uniform distribution and is between 35 minutes…

A: Given data: The time students take to complete an exam follows a uniform distribution. a = 35 b = 60

Q: Round each z-score to the nearest hundredth. A data set has a mean of x = 218 and a standard…

A: Given , x = 218    , σ = 40 We know , z-score = x-xσ

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A:

Q: c) The amount of sodium sulfate, in mg, found in the bottled water follows a normal distribution…

A: We have given that Mean(µ) = 13Standard deviations (σ) = 2.5X ~ N (µ, σ )= N (13,2.5)

Q: collected data on the cost of computers at best buy shows that 95% of the prices are between what…

A: The two values of cost of computers at best buy in which about 95% of the prices are is obtained as…

Q: The standard deviation of Binomial distribution, P(X = x)= 3C is a. 0.667 b. 1/3 c. 0.816 d. 2/3…

A:

Q: The mean Wechsler IQ score is 100 with a standard deviation of 15. IQ scores are roughly normally…

A: Given data Mean (µ) = 100 Standard deviation (σ) = 15

Q: n test score was 1463 and the standard deviation was 314. The E the z-scores that correspond to each…

A: Consider a random variable X which represents the standardized exam score. The formula for…

Q: Use the normal distribution of SAT critical reading scores for which the mean is 504 and the…

A:

Q: The mean IQ is 100 points with a standard deviation of 15 points. 4) What percent of the population…

A:

Q: Use the normal distribution of SAT critical reading scores for which the mean is 513 and the…

A: Given  Mean , μ = 513 standard deviation , σ= 112   a) What percent of the SAT verbal score is less…

Q: y produces steel rods. The lengths of the steel rods are nor standard deviation of 2.5-cm. which is…

A: The mean is 188.5 and the standard deviation is 2.5.

Q: Battery lifetime is normally distributed for large samples. The mean lifetime is 500 days and the…

A: Given,   Mean = 500 Standard deviation = 62   The objective is to find the percent of batteries have…

Q: Consider the diagram below and select the correct statement. и The green and blue curve represent…

A: We have given,

Q: Provide an appropriate response. Find the z-score for the value 68, when the mean is 69 and the…

A: Given that  Mean=69 Standard deviation=2 To find the Z score for the value 68.

Q: Use the magnitudes, rounded to two decimal places, of the 100 earthquakes included in the…

A: Given the data pointsClass width = 0.50Lower class interval of first class interval = 0.00 The 6…

Q: *. The mean IQ is 100 points with a standard deviation of 15 points. a) What percent of the…

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

Q: Victor Fries watches a morning news show, where he hears that the mean cost of a refrigerator repair…

A:

Q: An instructor gives a 100 point examination in which the grades are normally distributed. hte mean…

A: Given:- The sample follows a normal distribution with a mean, μ =60, & a standard deviation, of…

Q: Ngan scored 1 standard deviation below the class average on a statistics exam. The class average was…

A:

Q: The mean age when smokers first start is 13 years old with a population standard deviation of 2…

A: From the provided information, Mean (µ) = 13 years Population standard deviation (σ) = 2 years…

Q: Let X denote the annual salary of university professors in the United States, measured in thousands…

A: From the given information, Consider, X denotes the annual salary of university professors in the…

Q: Use the empirical Rule The mean value of land and buildings per acre from a sample of farms is…

A: Given information: The mean value of land and buildings per acre is, The standard deviation is,…

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of​ adults, and those scores…

A: Let x be the IQ score which follows normal distribution with mean 100 and standard deviation 15. The…

Q: A household spends on average of P5,500 for a 2-week period grocery items. The variable is normally…

A: Given,mean(μ)=5500standard deviation(σ)=700

Q: A city mayor in Michigan is planning the number of new snow plows he must purchase to remove the…

A: Here, µ=112, σ=14, and n=10.

Q: The distribution of head circumference for full term newborn female infants is approximately normal…

A:

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

A: Given: Population mean (µ) = 100 Population standard deviation (σ) = 15

Q: The time to complete an exam is approximately Normal with a mean of 46 minutes and a standard…

A: A bell curve is a form of a diagram that is employed to demonstrate how a cluster of given values is…

Q: μ-30 μ-20 μ-σ 3 μ+O μ+20 μ+30 +

A: It is given that  Mean, μ = 55 Standard deviation, σ = 3 Now, μ - σ = 55 - 3 = 52μ - 2σ = 55 - 2*3 =…

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: From the given information, μ=100σ=15 From the given plot, PX>x=0.1026

Q: Jennifer needs to estimate the average age of vets in Houston. The standard deviation of ages is 17…

A: Given : Standard deviation (σ) = 17 Standard error (SE) = 0.3

Q: The mean of an exponential distribution is 15. Then the standard deviation of the distribution is O…

A: We have to find standard deviation for exponential distribution..

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults doors, and those…

A: Here we need to find the indicated iq score.

Q: Jay is a photographer who estimates that their time shooting for a cooking magazine is uniformly…

A: (a). Write out the distribution for Jay’s situation: Denote the random variable as X = Time shooting…

Q: Use the display of data to find the standard deviation (do not round until the final answer, then…

A:

Q: Round each z-score to the nearest hundredth. A data set has a mean of  x = 76  and a standard…

A: Given: A data set has a mean of x = 76 and a standard deviation of 11.4.  a) The formula for z-score…

Q: ssume that the heights of women are normally distributed with a mean of 63 inches and a standard…

A: The formula for the z score is,  The probabilities is computed using standard normal table.

Q: Rock band The Rolling Stones have played scores of concerts in the las a) Assuming a population…

A: Given that rock band the rolling stones have played scores of concerts in the last twenty years. For…

Q: 0.75

A: Given X is normal Distributed with mean µ = 100.0 and standard deviation σ = 15.0 now will use…

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

A: The provided information is  µ=100 σ=15 P(X<x)=0.25P(X-µσ<x-10015)=0.25P(z<-0.6745)=0.25…

Q: The graph shows the distribution of times (in hours) that teenagers spend playing video games per…

A: Solution: Let X be the time that teenager spend playing video games per week. From the given…

Q: the margin of error for the amount of sugar is?

A: Given that  Sample size n = 25 Sample SD = 0.05 The critical value of t at df = (n - 1) = 24 and…

Q: All the following measures are used to measure the variation of data: Interquartile range, Standard…

A: The two types of measures in Statistics are the measures of central tendency and measures of…

Q: Find the indicated percentage. The heights of women are normally distributed with a mean of 65…

A: Let X be the random variable of heights of women Mean(X)=65 Standard Deviation (X)=2.5 Variance…

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.