2- In statistics we may compute a result that is statistically significant but not meaningful- give an example of this.

Q: Q.7: Mr. Hamood. a research scholar of Business Department in HCT, would like to find out the…

A: Hi! Thank you for the question! Since the question contains four subparts and we are allowed to…

Q: 2- The social researchers state there is an association between gender (sex) and response to…

A: Chi square χ2 test: Chi square test is used to test the association or relationship  categorical…

Q: The appropriate null hypothesis for the question posed by the researcher is: a. The observed counts…

A: Given :

Q: (b) The proportion of adults living in a small town who are college graduates is estimated to = 0.6.…

A:

Q: A random sample of size n = 244 is taken from a population of size N = 5,200 with mean μ = −73 and…

A:

Q: In a study of patients who were involved in problem gambling treatment were asked about co-occurring…

A: Given information: Denote the variable co-occurring addictive substances used by the subjects as X.…

Q: Suppose the random variable x  is drawn from a  population with mean 50 and  standard deviation 3.is…

A: Solution : Given : μ = 50             σ = 3              n = 30

Q: How can we use discrete random variables in statistics?

A: Solution: Discrete random variable: A variable is said to be discrete if it takes the positive…

Q: 3. Given the null hypothesis, "The mean age of the patients in a hospital is equal to 26", state the…

A:

Q: Electrical Engineers Computer  Majors Sample Size 500 500 Sample average 60000 58,500 Sample…

A:

Q: I personally have used statistics in trying to challenge the reliability of drug testing results.…

A: The probability of a random test resulting in dirty is as follows: The probability of a random test…

Q: Suppose you draw a random sample of 100 observations from a population with a variance = 25. What is…

A:

Q: 5. Suppose that you have a sample of 500 observations on two random variables: price denoted as X,…

A: Consider, X and Y are the random variables which represent the price and profit respectively.Number…

Q: A random sample of size 100 is taken from an infinite population having the mean 76 and variance 256…

A:

Q: The dean of a major university claims that the mean time for students to earn a Master's degree is…

A:

Q: If repeated random samples of size 50 are taken from an infinite population, the distribution of…

A: Central limit theorem:   If the size of the samples taken from the population are sufficiently…

Q: A random sample of n = 25 scores is obtained from a normal population with µ = 30 and σ = 6. What is…

A: The sample size is 25, population mean is 30 and population standard deviation is 6. The probability…

Q: Which random variable X is a discrete variable?

A: The number of degrees of the liquid can be in decimal. It can take any real value. So it is a…

Q: Whenever hypotheses are established such that the alternative hypothesis is "µ > 8", where u is the…

A: Given alternative hypothesis is,μ>8. That is, the alternative hypothesis is greater than case.…

Q: An inspector checks large truck loads of potatoes to determine the proportion ? in the shipment with…

A: We want to find test statistics

Q: Suppose that 1 in 1,000 doctors make an incorrect diagnosis of a patient’s illness. If 10,000…

A: It is given that 1 in 1000 doctors make an incorrect diagnosis of a patient’s illness. Therefore,…

Q: 3. What is your alternative hypothesis? (in statistical notation)

A: Given that Number of participant= 7

Q: A sample of n = 25 scores is selected from a population with μ = 70 and σ = 20. It is very unlikely…

A: Distribution of the Sample Mean: If the distribution of the population has mean μ and standard…

Q: A researcher studying public opinion of proposed Social Security changes obtains a simple random…

A:

Q: The claim that the variance of a normal population is σ2 = 4 is to be rejected if the variance of a…

A: Given: Sample size (n) = 9 Population variance = = 4 Point at which the claim is rejected =  s2…

Q: Suppose X is a normal random variable with mean 20 and standard deviation of 4. What is th…

A: Let X be the random variable from normal distribution with mean (μ) = 20 and standard deviation (σ)…

Q: Q.7: Mr. Hamood, a research scholar of Business Department in HCT, would like to find out the…

A: 1. In this case, it is appropriate to collect the data by randomly choosing the student of different…

Q: Suppose that x is a normally distributed random variable with mean 5 and standard distribution is 6.…

A:

Q: Suppose bob flips a fair coin 100 times.Let X be the number of heads he gets.What is Variance of X?

A: For a fair coin the probability of getting head= 0.5X=number of headsn=sample size=100p=probability…

Q: 30. In an ANOVA, the greater the Mean Squares Within, the higher the F ratio would be also. * True O…

A: To test the significance of the overall regression of the model. F ratio is computed.

Q: 2. Suppose this is a random sample. Test the hypothesis that there is an association between…

A: Given: Mother's education, X Respondent's education, Y 16 16 16 18 12 14 12 14 9 9 8…

Q: Suppose the random variable X has a geometric distribution with p=0.7. Find P(X>1) ?

A:

Q: Now, it's your turn! Based on the following scenario, formulate the two hypotheses about the average…

A: Given that  Sample size n =60 Population mean μ =19

Q: S National Center for Health Statistics collects and publishes natality (birth) statistics. Suppose…

A: According to the central limit theorem, the sampling distribution of the sample scores follows the…

Q: A random sample of 300 physicians shows that there are 50 of them who make at least $200,000 a year.…

A: Given,n=300x=50p^=xn=50300=0.1667H0:P=0.20H1:P<0.20

Q: A researcher wants to test if elementary school children spend less than 30 minutes per day on…

A: Given that a researcher wants to test if elementary school children spend less than 30 minutes per…

Q: Suppose there is a claim that a certain population has a mean, 4, that is different than 5. You want…

A:

Q: Suppose that a random variable X can take the values (0, 1, 2 ,3,4,5,8,9} all with equal…

A: Given: Probability distribution of X x p(x) 0 0.125 1 0.125 2 0.125 3 0.125 4 0.125…

Q: If Y is a random variable from an exponential distribution with a mean of 5; what is the probability…

A:

Q: 8. If a researcher takes a large enough sample, he/she will almost always obtain: A. virtually…

A: Note: Since you have asked multiple question, we will solve the first question for you. If youwant…

Q: Suppose that X is a normal random variable with mean 5. If P(X > 9) = 0.2 ,approximately what is…

A:

Q: 5- If X and Y are uncorrelated, then they are not necessarily statistically independent.

A: Given: X and Y are uncorrelated.

Q: 2. Suppose X is a normally distributed random variable with a mean of 9.00. If the probability that…

A:

Q: wo separate samples, each with n = 30 scores, from the same population will produce identical…

A: Given information Given that, there are two samples collected of same size n=30 from the same…

Q: 3. In 2010, the United Nations claimed that there was a higher rate of illiteracy in men than in…

A:

Q: 30.5% of cases fall below what z- score?

A: Here we need to find the Z score within which 30.5% area lies.

Average

In mathematics, everyone must have heard the term average in one place or other. Almost all types of calculation require taking out an average. In everyday life, the term is used for denoting a certain amount that can be said to be a typical quantity for multiple people or objects. In other words, if a group of people possesses a certain object, then the average gives us an idea regarding the quantity of the object possessed by each person. However, this is solely based on mathematical calculation. It is important to note that most people will not strictly have the average value in a group.