Find the probability that a single randomly selected value is less than 39. P(X < 39) = answer is not .4325

Q: The mean per capita income is 20,436 dollars per annum with a standard deviation of 839 dollars per…

A: Given Information: Population mean (u) = 20436 dollars Standard Deviation (s) = 839 dollars Sample…

Q: Imagine you gather a sample of individuals and have them report their GPA. One individual's GPA is…

A:

Q: Suppose we are testing the hypothesis that the true mean of students score at a university is equal…

A: Answer: From the given data , sample size (n) = 31 sample mean( x-) = 72 sample standard deviation…

Q: Suppose that the scores on a reading ability test are normally distributed with a mean of 65 and a…

A: It is given that the mean is 65 and the standard deviation is 8.

Q: If IQ scores are normally distributed with a mean of 100 and standard deviation of 12, what does…

A: The normal distribution is symmetric in nature having parameters μ and σ.The mean, mode, and median…

Q: A leading magazine (like Barron's) reported at one time that the average number of weeks an…

A: The objective of this question is to find the probability that a sample of size n=58 is randomly…

Q: Suppose the distribution of serum cholesterol values in undergraduate men is approximately Normally…

A: GivenMean(μ)=190standard deviation(σ)=40

Q: Suppose that the distribution of Writing SAT scores from your state this year is normally…

A: Given,For male, mean (μ) =480 and standard deviation (σ) =110.For female, mean (μ) =500 and standard…

Q: What distribution is used in this chapter to make inferences for one population standard deviation?

A:

Q: A particular fruit's weights are normally distributed, with a mean of 450 grams and a standard…

A:

Q: Suppose that the duration of a particular type of criminal trial is known to have a mean of 24 days…

A: Let ∑X is defined as the total types of trails. The mean is 24, standard deviation is 8,sample size…

Q: A sample of 235 students was taken for an exploratory study. Each member of a random 35 of these…

A: Since the sample size is sufficiently large, and the population standard deviation is known, the…

Q: Suppose that we randomly select a sample of 80 measurements from an infinite population having a…

A: 1) Given: Mean μ=30 Standard deviation σ=5 Sample size n=80

Q: Suppose a new Director of Health Services for a district claims that she will reduce the average…

A: The one sample t-test is performed in MINITAB for the given data.Step-by-step procedure to perform…

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

A:

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

A: Central Limit Theorem for mean:If a random sample of size n is taken from a population having mean µ…

Q: In a population of heroin users, the mean duration of heroin abuse is 5 years with a standard…

A: From the provided information, Mean (µ) = 5 years Standard deviation (σ) = 3 years X~N (5, 3) Sample…

Q: Suppose a population is known to be normally distributed with a mean, equal to 116 and a standard…

A: The percentage of the population would be between 116 and 144 is obtained below:It is given that the…

Q: Suppose the  scores of students on an exam are normally distributed with a mean of 520 and a…

A:

Q: Suppose that the duration of a particular type of criminal trial is known to have a mean of 24 days…

A: Determine the distribution of ΣX.   The distribution of ΣX is determined below as follows :

Q: A particular fruit's weights are normally distributed, with a mean of 610 grams and a standard…

A: Assume that random variable X denotes a particular fruit's weight and follows normal distribution…

Q: Suppose you know that the distribution of sample proportions of nonresidents in samples of 200…

A: Let p^ denotes the sample proportion which follows normal distribution with mean 0.46 and standard…

Q: 4. In a city, it is estimated that the daily maximum temperature in June is normally distributed…

A: (4.2) Obtain the probability that one day in June has a maximum temperature of more than 33°C. The…

Q: In a certain university, a student can qualify for a masteral degree program in Business…

A: Given info: The test scores is normally distributed with mean of 175 and standard deviation of 20.

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

A: GIVEN DATA μ=100σ=15PROBABILITY THAT A RANDOM SAMPLE OF 100 PEOPLE HAS A MEAN IQ OF MORE THAN 104…

Q: A population has a mean of 75 and a standard deviation of 15 you randomly sample nine people from…

A: Given population have mean 75 and standard deviation 15. A sample of 9 people from the population is…

Q: The scores in an intelligent test (IQ test) are known to be normally distributed with a  mean of 100…

A: Let X be the score of an IQ test.Given that, X is known to be normally distributed with a mean of…

Q: Suppose a claim is made that the mean age of members of a golf club is 52 years. The population…

A: Given: n = 50 X = 56 years σ = 6 μ = 52 Formula Used: Test-statistic Z = X-μσn

Q: A population has mean of 150 and standard deviation of 20. What is the probability that a random…

A:

Q: Suppose a waitress keeps track of her tips, as a percentage of the bill, for a random sample of 60…

A:

Q: The distribution will be approximately a normal curve with mean_____and standard deviation_____ .

A: It is given that Mean = 104 And SD = 18 Sample size n = 100

Q: Suppose we know that the mean score among the population of college students taking the GMAT test is…

A: Solution-: Given: μ=1000,σ=1200,n=100 We find, P(we will observe a sample mean greater than 1200)=?…

Q: A particular fruit's weights are normally distributed, with a mean of 789 grams and a standard…

A: Obtain the number of grams for their mean weight will be greater than the 15% of the time. The…

Q: Suppose that the scores on a reading ability test are normally distributed with a mean of 70 and…

A: From the provided information, Mean (µ) = 70 Standard deviation (σ) = 10 Let X be a random variable…

Q: Suppose that the distribution for total amounts spent by students vacationing for a week in Florida…

A: Answer:- Given     X ~ N(μ, σ )                      Where mean μ   = 650        &amp;    standard…

Q: uppose you have the population value 50 and 80 and that their corresponding z-scores respectively.…

A: Given Data: Population value=50 and 80   we also know the corresponding z-score

Q: Suppose that the lengths of pregnancies are normally distributed with a mean of 269 days and a…

A: P(X&lt;x)=3%=0.03 x=?

Q: If mean is 20 and standard deviation is 5, what value of x contain the lowest 20% of the…

A: Solution

Q: In the year 2033, katy perry is a leading traveling nurse. Katy is interested in reducing the mean…

A: Population mean, μ=8.6 Sample size, n=46 Sample mean, x¯=8.1  Sample sd, s=1.2 α=0.05

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.