What will happen to the sample size if the percentage error becomes lower? Can you explain to me how the sample will best represent the population?

Q: A college counselor wants to determine if the number of hours spent studying for a test can be used…

A: An explanatory variable is the one which can be changed independently or what you manipulate or…

Q: What  statistical test( from the data)  should be used to check whether people choose each type of…

A: Chi-square goodness of fit test: The Chi-square goodness of fit test is used to test whether or not…

Q: Sampling is the main technique for . the size of data from the population size to a manageable size.

A: Sampling is the process of choosing a sample from a larger population for the purpose of statistical…

Q: The accompanying data represent the miles per gallon of a random sample of cars with a…

A: The data given is: 32.3, 35.8, 37.8, 38.7, 40.1,42.5, 34.6, 36.3, 38.1, 38.9, 40.6, 42.7, 34.8,…

Q: How can the specific characteristics of a population affect the analysis of data?

A: The basic data which is collected for any population before the analysis of data is their…

Q: Why do you think any serious researcher would use the sample mean to estimate for the population…

A: Generally research is carried out to determine a particularoutcome in the targeted…

Q: How much difference is there between the mean for the treated sample and the mean for the original…

A: Definition Sample Mean x It is the mean of all the values of a sample.   Population μ It is the mean…

Q: Explain the Formulas for a sample comparable to the ones for a population?

A: If the data includes all the possible values, then it is called population. Whereas, the sample data…

Q: Find a sample size for which the median will always equal one of the values in the sample.

A: Median: The median is the middle-most observation in an ordered (in an ascending or descending…

Q: In testing for the differences between the means of two independent populations, you assume that the…

A: In testing for the differences between the meanings of two independent populations, we assume that…

Q: You choose 20 students from the population and calculate the mean of their test scores. You repeat…

A: Points on sampling distribution of the sample mean: If the true population distribution of a random…

Q: The sample mean is a good estimate of the population mean because the lager sample compensate the…

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

Q: estimate the sample size

A: An estimate of sample size: The appropriate sample size for estimating the mean of a variable from…

Q: I am trying to add a column that takes the difference of the affected and unaffected column in R and…

A: The objective of the question is to add a new column to the existing data frame 'schizophrenia' in…

Q: In a right AABC. LABC is 90° and AC is 4 units. If P is on AC such that BP = 1 and BPLAC, which of…

A:

Q: According to the Law of Large Numbers what effect will increasing the sample size have on the sample…

A: It is given that the sample size increases.

Q: State one possible advantage of using paired samples instead of independent samples.

A: Provide the possible advantage of using paired samples instead of using independent…

Q: data has extreme scores, what is the best measure of average?

A: The mean is the average value of the data set. It is calculated by summing up all the observations…

Q: One way to measure a person's fitness is to measure their percentage of body fat. Average body fat…

A: Men Women 13.3 22 6 16 20 21.7 8 21 14 30 19 26 18 12 25 23.2 16 28 24 23 15…

Q: The foreman at a large plant estimates that there are defective parts about 1% of the time.  If the…

A: It is given that n =20,000 and p = 0.01.

Q: why do you think the data presented this way?

A: The 2 different factors considered are: Human Factors Land Use Ozone Aerosols Greenhouse…

Q: The sample data here is the cholesterol levels for 10 men diagnosed with high cholesterol. The first…

A: Result Option 3 is correct. The mean cholesterol level of males who take the medicine is lower than…

Q: Give an example of interest to you for comparing two population means. Identify the variable under…

A:

Q: How would you interpret this data

A: where the standard coefficients are provided for using the incarceration rate as a predictor…

Q: A researcher conducts a study to investigate whether the obesity rate rural communities differ from…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: It is not important to collect samples randomly. True or false

A: Any sample must be collected using the random techniques. If the samples are not collected randomly…

Q: 7. In a test of hypothesis, H, µ= 342 vs H,: µ>342, the sample size is 9, the test statistics is…

A: Given information- Hypothesis Null Hypothesis: Ho: µ = 342 Alternative Hypothesis: Ha: µ > 342…

Q: A researcher plans to compare two treatment conditions by measuring one sample in treatment 1 and a…

A: It is given that a researcher tested two different Treatments on two different samples and finds…

Q: If I draw a graph of the distribution of income in the US, that graph will be skewed to the right.…

A: Left skewed distribution: The left skewed distribution also known as the negatively skewed…

Q: b) Explain why this study can be analyzed using inference of two sample means. Select all that…

A: Sample data regarding community college transfer and no college transfer is given with sample size,…

Q: AFTER ENTERING TEST SCORES FROM HER STATISTICS CLASS, THE INSTRUCTOR CALCULATES THE MEAN AND THE…

A: Given that an instructor calculated the mean and median of the test scores in a statistics class. It…

Q: Follow -up Questions: 1. What will happen to the sample size if the percentage error becomes lower…

A: What will happen to the sample size if the percentage error becomes lower e.g. 5% instead of 10%?

Q: When reading a problem, one must be aware of the sample size to determine if it is a Z-score or…

A: We know that- If the population standard deviation is known and the sample size n > 30, then we…

Q: Explain why increasing the sample size tends to result in a smaller sampling error when a sample…

A: Sampling error:When a sample is used to estimate a population characteristic, the error resulting is…

Q: On average, a sample of n = 36 scores will provide a better estimate of the population mean than a…

A: We have to identify trueness of statement.

Q: a sample of at least 10. (n=10)

A: The best way to ensure sample represent the population it came from accurately is to make sure that…