A study carried out to determine if the average house price has changed since 2015. A random sample of 15 is taken and the prices are recorded. There are two exceptionally high prices that skew the distribution.  What is the most appropriate test used for this? eg-Sign Test, T test?

Q: In Binomial Distribution, If q=60% and n=12, then the mean is 0.72. (True or False)

A: Solution: From the given information, q=0.60 and n=12.

Q: How do you interpret sample standard deviation and sample mean.

A: Interpret sample standard deviation - Low standard deviation means data are clustered around the…

Q: Psychology students at a university completed the anxiety Scale questionnaire. Scores on the scale…

A: Given Data : Population Mean,μ = 10.5 Population Standard Deviation,σ = 2.0

Q: A study of all widgets from a factory showed the mean age of widgets to be 22.2 years with a…

A: A parameter is a descriptive measure that is calculated for the entire population. Generally, we…

Q: n by age group (this means to calculate the relative frequencies after separating the data based on…

A: Under 30 30-39 40-49 50 and over Promoted 16 22 26 15 Not-promoted 38 39 45 38

Q: What are three significant pieces of information we need to know to summarize a distribution?

A: The three significant pieces of information we need to know to summarize a distribution are as…

Q: Extreme/usual scores that can impact results are called:

A: Solution: Outliers: Outliers can be defined as outliers are the extreme observation that are…

Q: A quantitative data set has 22 observations  when arranged in descending order what is the value of…

A: The quantitative data set has 22 observations.

Q: A binomial experiment is given. Decibe whether you can use the normal distribution to approximate…

A: Solution: Given data P= 53% Sample size (n) = 50

Q: Mention some of the factors that affect choosing a sample over a population when conducting a…

A: It is an important part of statistics. It is widely used.

Q: MCAT in a recent year,scores on the medical college admissions test had a mean of 25 and a standard…

A: From the provided information, Mean (µ) = 25 Standard deviation (σ) = 6

Q: What does sampling distribution describes?

A:

Q: Traffic department wants to know if automobile accident is a very serious problem in Central…

A: Null hypothesis:µ=3.Alternative hypothesis:µ≠3This is a two tailed test.Since the population…

Q: What happens to the interval as you increase the confidence of the sampling distribution?

A: As the confidence level increases the width of the confidence interval increases and as the…

Q: 2. A survey found that 73% of respondents currently have a job. Is 73% a statistic or a parameter?…

A: Given that  Sample proportion p^=0.73 Parameter is based on population.

Q: What z-score value separates the highest 10% of the scores in a normal distribution from the lowest…

A: We want to find highest 10% value for z score

Q: 20, 24,29,20,36,41  which numbers on the list are within .5 standard deviations of the average

A:

Q: he graph of the waiting time(in seconds) at a red light is shown below on the left with its mean and…

A: Given Information: Mean μ=16.6 Standard deviation σ=12.2 Sample size n=100 is drawn from the…

Q: What is the z-score boundary for the bottom 2.5% of the distribution?

A: To find the z-score for the bottom 2.5% of the distribution.

Q: What is the difference between a normal and binomial distribution?

A: Statistics uses normal distributions more often than binomial distributions most of the time.…

Q: How do I explain applying the normal curve to a set of test scores?

A:

Q: Ques45)The first and third quartile of a normal distribution respectively. Then distribution is the…

A:

Q: The spread or variation in the sampling distribution of means is called the                 of the…

A: Spread or variation in the sampling distribution of means is given.

Q: Do a significance test for a specific comparison?

A:

Q: A restaurant chain is measuring the levels of arsenic in chicken from its suppliers. The question is…

A: It is hypothesized that: H0:μ=80  against  H1:μ>80(right-tailed) Here, μ is the average arsenic…

Q: s statistical test

A: Athlete   Non-athlete   Donut Bagel Donut Bagel Procedure for Hypothesis Testing is given as…

Q: What z-score value separates the highest 70% of the scores in a normal distribution from the lowest…

A: Normal distribution is given.

Q: In a distribution plot, if mean is much smaller than median, does the underlying sample have very…

A: Outliers- It is an observation or a value that lies outside from the population or which is far away…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.