Find the probability that a single randomly selected value is between 119.2 and 128.1. Round your answer to four decimal places. �(119.2<�<128.1)=    Find the probability that a randomly selected sample of size �=215 has a mean between 119.2 and 128.1. Round your answer to four decimal places.  �(119.2<�<128.1)=

Q: Suppose that you want to determine the number of people who will attend a conference this year. In…

A: Given information: The investigator wants to determine the umber of people who will attend a…

Q: . Assume that adults have IQ scores that are normally distributed with a mean of 103.1 and a…

A: The adults have IQ scores that are normally distributed with a mean of 103.1 and a standard…

Q: d. What is the probability that the sample mean will be between 250 pounds and 257 pounds? P (250…

A: Given that μ=247.2,σ=35,n=34

Q: A pharmaceutical manufacturer is concerned about the impurity concentration in batches of drug and…

A:

Q: 2. Suppose that the mean lifetime of a random sample of 25 batteries produced by a factory is 700…

A: Solution: 2. Let X be the lifetime of a battery. From the given information, X follows normal…

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: Let X represents the lengths of the steel rods Mean (X)=98.3 Standard deviation (X)=2.4 Therefore,…

Q: Suppose that IQ scores have a bell shaped distribution with a mean of 101 and a standard deviation…

A: The IQ scores have a bell shaped distribution with a mean of 101 and a standard deviation of 17.

Q: 4. On a certain standardized test, the population mean is 250 with a standard error of the mean of…

A: Given: Population mean, μ=250Standard error of mean, σx¯=25

Q: About 2% of the population has a particular genetic mutation. Suppose 100 people are randomly…

A: Givenp=2%=0.02n=100x~Binomial(n=100,p=0.02)P(X=x)=(nx)(p)x(1-P)n-x  ; x=0,1,2...,n

Q: Explain with an example of the distribution of values around the mean by using general rules.…

A: We have to find given distribution.

Q: Suppose that Sacramento workers have a mean commute of 17 minutes and commute times are normally…

A:

Q: C. Find the probability that a randomly selected district had fewer than 1994 votes for President…

A:

Q: The length of a fully grown hibiscus plants is normally distributed and has a mean of 35cm and a…

A: Given that,Mean(μ)=35standard deviation(σ)=4     The random variable  is length of fully grown…

Q: alternative hypothesis, u6.5. Use a = 0.05 Conduct a t-test for the null hypothesis H: u = 100…

A: x=110 s=8α=0.05 Null hypothesis :H0:μ=100 alternative hypothesis: H1:μ&gt;100

Q: The average score of all golfers for a particular course has a mean of 70 and a standard deviation…

A: μ=70,σ=4.5,n=81

Q: 3. The amount dispensed by the coffee machine follow the normal distribution with a mean of 5,286…

A:

Q: Sketch the distribution, show the mean and standard error, and shade the part of the curve…

A: It is given that, n = 200 and p = 0.34.

Q: 8 The population of a country follows a normal distribution with mean height 175 cm and standard…

A: Given Population mean μ=175, standard deviations σ=6  Let X be the height  X~N(μ=175, σ=6) Note:…

Q: A student takes a 35-question multiple-choice exam, but did not study and randomly guesses each…

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Q: mar is trying out to be a firefighter.  On the written exam, the mean of everyone who takes the test…

A: given data, μ=54.5σ=3.1Omar scores exactly 0.75 standard deviations above the mean z=0.75raw score…

Q: The average number of words in a romance novel is 64,315 and the standard deviation is 17,381.…

A:

Q: The average number of words in a romance novel is 64,063 and the standard deviation is 17,358.…

A: Given data: Mean = 64063 Standard deviation = 17358 X is normally Distributed

Q: professor at a local university finds that the mean exam grade for her students is 73 with a…

A: A professor at a local university finds that the mean exam grade for her students is 73 with a…

Q: A leading magazine reported at one time that the average number of weeks an individual is unemployed…

A: We have given that  X~N(mu,sigma ^2) mu=29 ,sigma =3.5 Z-socre =(x-mu)/sigma

Q: Answer the multiple choice. A sample of size 50 will be drawn from a population with mean 73 and…

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Q: The time spent waiting in the line is approximately normally distributed. The mean waiting time is 5…

A: given data,normal distribution μ=5σ=3probability that person will wait more than 9 minutes =?

Q: About 7% of the population has a particular genetic mutation. 162 people are randomly selected.…

A: We have to find mean and standard deviations..

Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

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Q: The mean is μ = girl(s). (Round to one decimal place as needed.) The standard deviation is o =…

A: Number of girls xP(x)00.00310.03220.11430.22740.26650.21460.11270.02980.003

Q: The distances golf balls travel under laboratory testing conditions are normally distributed. The…

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Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: Normal distribution

Q: A researcher claims that the stomachs of blue crabs from Location A contain more fish than the…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: About 7% of the population has a particular genetic mutation. 183 people are randomly selected.…

A: Given Information: Number of people, n = 183 Percentage of population has a particular genetic…

Q: Suppose a normally distributed set of data has a mean of 163 and a standard deviation of 17. Use the…

A: Given μ=163σ=17

Q: The average American man consumes 9.9 grams of sodium each day. Suppose that the sodium consumption…

A: Answer of last part may vary if you take table z value other than two decimal places

Q: Suppose that X, Y, and Z are jointly distributed random variables, that is, they are defined on the…

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Q: The average salary for a civil engineering major is $75,000 with a standard deviation of $10,000. A…

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Q: and a standard deviation of 1.00°C. A single thermometer is randomly selected and tested.…

A: Given: Assumption:  The readings at freezing on a bundle of thermometers are normally distributed…