You want to make a confidence interval for the true average number of users of the video server at UF. A random sample of 8 days reveals the following numbers:   4593, 5197, 3865, 4835, 3900, 3171, 3559, 18091   Can we use the t table to make this confidence in

Q: suppose that 50 students were randomly sampled and their mean age was 30.4 years old. the population…

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Q: Bella’s aims to construct a confidence interval for the mean of a normal population with known…

A: The margin of error are reduced  by the following three causes  1. Level of significance As the…

Q: standardized placement test was given to 10 boys and 11 girls who applied for a certain job. The…

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Q: The Human Resource Department (HRD) of a company developed an aptitude test for screening potential…

A: Solution: Given information: n= 13 Sample size  x=96 Sample meanμ=100 Population means= 5.2 sample…

Q: The 95% confidence interval for the difference in the proportions of people who make donations if…

A: Given : n1 = 200 x1 = 56 n2 = 200 x2 = 36 confidence level,c=0.95

Q: A scientist wondered if there was a difference in the average daily intake of dairy products between…

A: Reviewing information, X : Daily intake of dairy products of MenY : Daily intake of dairy products…

Q: A doctor wants to estimate the mean HDL cholesterol of all 20-29 year old females. How many subjects…

A: formula for the sample size needed to estimate a population mean is

Q: If n=24, ¯ x x ¯ (x-bar)=33, and s=13, construct a confidence interval at a 99% confidence level.…

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Q: We have a normally distributed random variable Y and we wish to develop a 95% confidence interval…

A: From the given date we want to find the confidence interval for variance.

Q: Let us suppose we have data on the absorbency of paper towels that were produced by two different…

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Q: The average weight of 36 randomly selected school buses was 4150 pounds with a standard deviation of…

A: Given data,x=4150σ=480n=36z-value at 99% confidence is Zc=2.576

Q: am interested if there is a difference in the mean amount that freshman and seniors spend on texts…

A: Given that random sample of 54 freshman and 52 seniors. Based on these samples a​ 95% confidence…

Q: I want to construct a confidence interval (CI) for estimating the population mean of IQ scores. I…

A: As per the solution the sampled observations are n=65

Q: researcher was interested in the mean corn yeild for farmers in Illinois. She took an SRS of 28…

A: Given that  Margin of error =E =3.5 Population standard deviation =13.25 95% confidence level.

Q: The data for an independent –measures research study produced a sample mean difference of 6 points…

A: Following information is given:

Q: A random sample of 16 movies has been selected from a normally distributed population. If the mean…

A: Given that, a random sample of 16 movies has been selected from a normally distributed population.…

Q: sketch a normal curve  a) with mean 15 and standard deviation 2. b) with mean 15 and standard…

A: Note: Please repost remaining questions as i can answer only 3 subparts as per my policy. 4) a)with…

Q: The following data represents temperatures for 2 cities (n = measurement days) (a) City 1: n1 = 15,…

A: Confidence Interval : The formula for the confidence interval of difference between two samples is…

Q: A fitness center is interested in finding a 90% confidence interval for the mean number of days per…

A: Given Information: Sample size (n) = 241 Sample mean (x¯) = 2.3  Standard deviation (s) = 2.9 To…

Q: A certain counselor wants to compare mean IQ scores for two different social groups. A random sample…

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Q: Let us suppose we have data on the absorbency of paper towels that were produced by two different…

A: For process 1  Sample size n1=10 meanx1=180 Standard deviations1=15 For process 2  Sample size n2=4…

Q: (b) A good way to judge the effect of outliers is to do your analysis twice, once With the sutilers…

A: The confidence interval for all data is, confidence interval =x¯ ± tα/2,n-1*S/nWhere, x¯…

Q: People with high blood pressure suffer from hypertension. Data on fasting blood sugar…

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Q: the sample proportion of females is  x=118  n=164 P = .720  #1 Make a 95% confidence interval for…

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Q: 1. For each of the following confidence intervals for B,, (i) determine whether there is a linear…

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Q: True of False.  If a 90% confidence interval estimate for the population mean score of all Physics…

A: As per the honor code, We’ll answer the first question since the exact one wasn’t specified. Please…

Q: hen you have two independent populations, explain the similarities and differences between the test…

A: Our aim is to explain the similarities and differences between the test of hypothesis for the…

Q: A research study was conducted about gender differences in Sexting. The researcher believe that the…

A: What is the question/claim to be tested in symbols? We want to test the proportion of girls sending…

Q: The sample correlation is -0.8. If the sample size was 40, then the 99% confidence interval states…

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Q: The mean diastolic blood pressure for a random sample of 70 people was 96 millimeters of mercury.…

A: given data  n = 70 x¯ = 96σ = 1190% ci for μ.

Q: linear correlation coefficient is r= The test statistic T is ? The p-value

A: Steps to construct scatter plot in Excel: Enter the data for Lemon Imports and Crash Fatality Rate…

Q: A teacher gives a test to his class of 25 students. Since he wants to quickly obtain an estimate of…

A: The class of 25 students is considered as the population. Sample size n =12 Sample mean x¯=82 Sample…

Q: Suppose that the population of lengths of all fully grown male killer whales is approximately…

A: Given that Number of killer whales =10 Sample mean =7.241 Sample standard deviation =1.436 We have…

Q: Lower Bound = p – z* × SE Upper Bound = p+ z* × SE

A: Obtained that   p^ = 0.8468 Standard error (SE)= 0.0123 Confidence level = 93%  = 0.93 Level of…

Q: The researcher took a random sample of 50 residents and found that the mean height of men is 175cm.…

A: A normal distribution is the one which has same mean, median and mode.

Q: am computed a 95% confidence interval for mean from a specific random sample. His confidence…

A: By the definition of confidence interval, it is a range of values which might or might not contain…

Q: The pulse rates of 176 randomly selected adult males vary from a low of 40 bpm to a high of 116 bpm.…

A: Given Margin of error=2 Alpha=0.05 Maximum=116 Minimum=40

Q: Alfredo wants a 85% confidence interval for the true average gas mileage for a Gremlin after…

A: We have given that  Sample size n =9 Sample mean =24 Population standard deviation =4 85% confidence…

Q: Pedro was working on a report on Swiss and Austrian psychiatrists. He decided to find a 90 percent…

A: Pedro found the ages at the time of psychological discovery of all the members of both Swiss and…