if the 90% Ci for the population mean is ( -2.58, 7.54) what is the sample mean

Q: Out of 300 students in the school, 225 passed an exam. What would be the mean of the sampling…

A:

Q: A recent survey by the U.S. Census Bureau determined that the median monthly housing rent was $643.…

A: W heaven to find asked percentage from given data.

Q: The mean width of 12 iPads is 5.1 inches. The mean width of 8 Kindles is 4.8 inches. What is the…

A: The mean width of 12 iPads is 5.1 inches. and The mean width of 8 Kindles is 4.8 inches. What is the…

Q: Q2. Define population in terms of statistics and describe why are samples needed and how are they…

A: It is asked to define the population in terms of statistics and to describe why samples needed and…

Q: A recent survey by the U.S. Census Bureau determined that the median monthly housing rent was $637.…

A:

Q: A sample was done, collecting the data below. Calc 10 22 28 14

A: Given information: The sample data is provided as: x 10 22 28 14 7 It is to…

Q: The sample for the survey is ...

A: Here determine sample from which identify no o people support Lafeyette leopard team

Q: Given the data set, show how the variance and z-score of each grade is found.

A: Variance is the measure of dispersion. It provide the deviation of data set from the mean. It is…

Q: The owner of a local bar specializing in alternative music wanted to determine the average age of…

A: t 95% confidence level, the z value is 1.96 which can be obtained by using the standard normal…

Q: Find sample size CI=75% E=3.61 Stand. dev.=6.78

A:

Q: Can the median split a distribution into a 85% : 15% frequency ratio of the observations?

A: Given: split the distribution into a 85% : 15% frequency ratio of the observations

Q: how does the sample and population relate?

A: Sample and population both are different items, but both are related with each other. Population is…

Q: Is the sample mean always equal to one of the values in the sample? If so, explain why. If not, give…

A: FALSE Lets take sample set S={10,15,20,25,30,35} The mean of above sample S is =…

Q: What are the steps for Finding Proportions for One Score?

A:

Q: The Taylors have recorded their weekly grocery expenses for the past 16 weeks and determined that…

A: Given The total number of weeks=16 Mean=$84.30 1 week's recorded expense is $48 but actual expense…

Q: What percentage of pets are Rabbits?

A:

Q: The mean GPA for 138 residents of the local apartment complex is 1.9. What is the best point…

A: Solution: From the given information, the mean GPA for 138 residents of the local apartment complex…

Q: what is the z score for the 44th percentile

A: Obtain the z score for the 44th percentile. The z score for the 44th percentile is obtained below as…

Q: We would like to determine the average height of the overall student body at Michigan State…

A: Yes, It is necessary to take a sample from the overall student body.

Q: estimate the sample size

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

Q: A survey of 400 non-fatal accidents showed that 189 involved the use of a cell phone. Determine a…

A: Given that, In a survey of 400 non-fatal accidents showed that 189 involved the use of a cell phone.

Q: What percentage of scores are between scores 75 and 89?

A: By emperical rule  P(-1<Z<1)= 0.68 P(-2<Z<2)=0.95 P(-3<Z<3)= 0.

Q: If you increase the sample size to 50 from 30, will the standard error of the mean be smaller or…

A: When increasing the sample size to 50 from 30, the standard error of the mean would be smaller…

Q: The sample mean or sample proportion is unbiased estimator to the population proportion in case of…

A: The sample mean or sample proportion is unbiased estimator to the population proportion in case of…

Q: Find the weighted mean for a particular student's scores on three exams if the first one was worth…

A: The weighted mean can be calculated as: Weighted mean = Sum of (weightage x score) / Sum of…

Q: What percentage of scores are between scores 68 and 82?

A:

Q: Find the 20th percentile of the data 4 5 11346 2

A: Given data is 4,5,1,1,3,4,6,2sample size(n)=8

Q: Consider the sample data: 125, 100, 112, 127, 112, 105. What is the sample mean of the data?

A: Given data set: 125, 100, 112, 127, 112, 105

Q: How do the sample mean and the population mean differ? What is the symbol for each type of mean?

A: Here we have to define  How do the sample mean and the population mean differ? and  What is the…

Q: The US population is 13% African American.  If you were to take a SRS of 500 Americans, above what…

A: Solution:From the given information, the proportion of African American is 0.13, random sample of…

Q: The average salary of male employees in a firm was $520 and that of females was $420. The mean…

A: We have given that  The average salary of male employees =$520 And the average salary of females…

Q: In a survey, the median household income in a country was found to be £27000, and the mean household…

A: Given: Mean=53000Median=27000

Q: describe why it is important for the sample in your study to be as representative as the source

A: Representative samples are important as they ensure that all relevant types of people are included…

Q: the average score for an entire population is an example of

A: Solution: Parameter: Parameters is fixed value  obtained from a all population or  whole population.…

Q: If you calculate the mean for a sample, this would be considered a sample

A: Mean is a part of measures of central tendency. Calculating mean of the sample also means…

Q: In the population, the mean SAT score is 1000. Would you be more likely (or equally likely) to get a…

A: Given that the population mean is 1,000 and the samples sizes selected are 10 and 30.

Q: doesn't the mean of a sample population equal the true proportion?

A: Yes, the sample population is equal to true proportion.

Q: The mean GPA for 102 residents of the local apartment complex is 1.8 What is the best point estimate…

A: Solution: Given information:  n = 102 Sample size  x = 1.8 Sample mean

Q: Explain the relationships among the sample proportion, the number of successes in the sample, and…

A: Sample proportion: The fraction of number of members sampled which have a specified attribute and…

Q: In a sample of 20 men, the mean height was 178 cm. In a sample of 30 women, the mean height was 164…

A:

Q: State the mean and variance of the sampling distribution of the mean?

A:

Q: if the 90% Ci for the population mean is (-4.58, 6.54) what is the sample mean O a. can't be found

A: Given data,Lower limit =-4.58Upper limit =6.54Sample mean =?

Q: The PRC wants to assess the difference in ratings of five different engineering board examinations.…

A: This is an ANOVA test for a single factor

Q: A sample of students involved in laboratory accidents was categorized by age. The results appear as:…

A:

Q: suppose you have information about average heights of a random sample of airplane passengers. The…

A:

Q: When the Standard Score = -2, what is the percentile of the raw score? O 2nd O 14th 16th 34th 84th

A: Given that, Standard score = -2

Q: A recent survey by the U.S. Census Bureau determined that the median monthly housing rent was $629.…

A:

Q: What are the steps for Finding Proportions beyond Two Scores?

A: Z-score: Z-score shows how far a score is away from the mean or it shows how standard deviation away…

Q: What is the sample proportion

A: Claim: More than half of the population believes that passwords should be replaced with biometric…