Because of the popularity of movies as an entertainment medium for college students, you plan to do a national study of the average cost of a movie ticket.If you assume that o = $0.50, what sample size would you have to take to be 95% confident that your estimate was within $0.25 of the true mean ticket prices?

Q: To test the intelligence of 10th class boys and girls in a Higher Secondary School, a sample of 83…

A: We have given that  Sample size n1=95 , n2=83 Sample mean xbar1 =29.91  xbar2 =40.92 Standard…

Q: What is the purpose of the confidence intervals in Statistics?

A: Confidence interval is derived from the Sample stastics for the estimatation of population…

Q: Answer the following statistic questions, name two different kinds of shapes that are a possibility…

A: Histogram is a graphical representation which organizes a group of data values into user-specified…

Q: What is the need of coefficient of dispersion in data analysis? If 25% of the items are less than 10…

A: We have to tell about :  coefficient of dispersion in data analysis. Coefficient of quartile…

Q: For the independent-measures t statistic, what is the effect of increasing the sample variances?

A: If there is more variance in the sample data , then the difference between the mean of data and data…

Q: Based on the boxplot and descriptive statistics, which group shows more variability in narcissism…

A:

Q: Under what conditions would it be better to use the median instead of the mean?

A: n statistics, three measures of central tendency are widely used. These three measures are also…

Q: |Bank of America's Consumer Spending Survey collected data on annual credit card changes in seven…

A:

Q: Is the following an observational study or an experiment? Take a random sample of people at a…

A: The given statement is  "take a random sample of people at a fitness center. Ask them if they use…

Q: From the following data, calculate the z-score.                          N         =          100…

A: It is given that the sample mean, x-bar is 15, sample size, n is 100, population mean (mu) is 22,…

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: If you view the company’s performance record as a representative sample of its overall sales…

A: Data given in order Monthly Sales 6267.19 7058.06 7119.5 7147.18 7198.52 7298.09…

Q: In a sample survey taken of 450 residents of a given community, 180 of them indicated that they shop…

A:

Q: |Bank of America's Consumer Spending Survey collected data on annual credit card changes in seven…

A: (a). Null and alternate hypotheses: The investigator is interested to test whether there is any…

Q: was the mean for the original sample? (SHOW YOUR WORK)

A:

Q: If we have a data set containing the age and marital status of large group of individuals and we ask…

A: Independent samples t test: The independent samples t-test can be used to examine a possible…

Q: The herpetologist ends up rejecting the null hypothesis. If the actual proportion of ridged…

A: The herpetologist ends up rejecting the null hypothesis. If the actual proportion of ridged…

Q: Consider the following random sample of data: 1,9, 8, -1, -1, 3 -1,0, 3, 89 a) What is the mean of…

A:

Q: Does the data from the sample support his claim at a significance level of 0.05?

A: It is given that Sample size n = 60 Sample mean M = 3012 Sample SD s = 112 Level of significance =…

Q: on an intelligence quotient test with a mean score of 100 and a standard variation of 15, patrick…

A: Given: The value of mean is, μ=100. The value of standard deviation is, σ=15. The value of score…

Q: Dr. Volk wanted to see if there was a significant association between in the number of college…

A: H0 : There is no association between in the number of college students by grade level (Freshman,…

Q: Bank of America’s Consumer Spending Survey collected data on annual credit card changes in seven…

A: a. Null hypothesis : H0 : μ = 0 Alternative hypothesis : Ha :  μ ≠ 0 Therefore , it is two tailed…

Q: What is the median of the data below? The following are the scores of grade 10-Caluag in a 30-item…

A: Formula for median :  Median = n+12thordered value, if n oddAverage of n2thand n2+1thordered valueif…

Q: Why is statistical inference generally used to obtain information about a population proportion?

A: Generally, the size of the population that is considered under study is large. It would be difficult…

Q: The claim is that for a smartphone​ carrier's data speeds at​ airports, the mean is m=12.00 Mbps.…

A:

Q: Name the 4 circumstances where the median would provide a better measure of central tendency than…

A: Central tendency: The value that is used for describing the full data set using the central position…

Q: In the case of research data analysis which one is the best? SD (standard deviation)  or ANOVA?

A: Statistical methods involve  planning, designing, collection of data, analyzing the data,…

Q: In a sample of 81 elements, the mean was 60 and the variance was 144. What is the standard error for…

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Q: What is the average IQ of these subjects?

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Q: Bank of America's Consumer Spending Survey collected data on annual credit card charges in seven…

A: For the given data Hypothesis test for paired t test

Q: I am lookin for the relationship between the sample mean and the population mean and also the…

A: An estimate mus be having few properties in the sense of best estimate.Unbiasdness is one the…

Q: Roughly speaking, what are the normal scores corresponding to a sample of observations?

A: The normal scores corresponding to a sample of observations are observations and expect same sample…

Q: Consider a sample with data values of 10, 20, 16, 12, and 17. Compute the mean and median. mean…

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Q: What is the relationship between the mean of a population and the mean of its sampling distribution?

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Q: The manager for the Jiffy Lube in Saratoga, Florida, has collected data on the number of customers…

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Q: What is the estimated standard error of the mean based on these sample data? Y -2 1 3 2 -1 0 4 6

A:

Q: Consider the following random sample of data:   -9, 3, -7, 1, 0, 0, 8, -8, 6, 87     a) What is…

A: The sample data: -9, 3, -7, 1, 0, 0, 8, -8, 6, 87

Q: Bank of America’s Consumer Spending Survey collected data on annual credit card changes in seven…

A: Given that, Bank of America’s Consumer Spending Survey collected data on annual credit card changes…

Q: Consider the following random sample of data: -7, -4, -3, 8, -7, -3, 7, -9, -2, 85 a) What is the…

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Q: Please also explain why you determined whether or not the results are statistically significant.…

A: It is given that the mean scores for participants in Condition A and Condition B came out exactly…

Q: the national mean annual salary for a school administrator is $90,000 a year (the Cincinnati…

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Q: Bank of America’s Consumer Spending Survey collected data on annual credit card changes in seven…

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Q: In almost all research studies, data are obtained from samples. A. True в. False

A: In almost all the research studies ,data are obtained from the samples  True  False

Q: hospital stay

A: Mean: It represents the average of the given collection of data. Median: Generally median represents…

Q: 2. Explain the relationship between the population mean µ, the sample mean X, and a value of the…

A: Population: Population consists of the complete subjects that are included in the study for making…

Q: Traditional statistics (means, variances, and hypothesis tests) are not used to evaluate the results…

A: The traditional statistics are used to evaluate the result means we use the critical values to make…

Q: If the mean time to respond to a stimulus is much higher than the median time to respond, what can…

A: There can be three different shape of the distribution: 1) Positively skewed: Most of the values…

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.