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: A doctor would like to estimate the mean difference in height of pairs of identical twins. The…

A: The correct inference regarding the given interval of (-0.823, 0.573) is to be made from the given…

Q: Suppose that the population standard deviation of students score is 20. what is the sample size so…

A:

Q: A Dean of a certain business school is interested in the difference in proportions of A's given by…

A: Givenn1=800x1=240n2=800x2=160p1^=x1n1=240800=0.3p2^=x2n2=160800=0.2α=1-0.95=0.05α2=0.025zα2=1.96

Q: Suppose we know that a confidence interval is (-.735, .125). Find the sample mean and the error…

A: Ans- Given,     a confidence interval is (-.735, .125). Find  the sample mean and the error bound.

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: Suppose we know that a confidence interval is (27,35), with a margin of error of 4. Find the sample…

A:

Q: A research company wants to estimate the mean IQ score for the population of all high school…

A:

Q: 2. Suppose that the sample mean temperature of 31 hot air balloons (in flight) is 97° Celsius with a…

A:

Q: Levels of insoluble ash (gm/kg) were measured in a sample of small (0.3 gm) aliquots of dried and…

A: Given information: The given confidence levels are: 95%, 90%, 85% The given confidence intervals…

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: I want to estimate the average time it takes a tomato plant to bear fruit. I randomly sample 16…

A: Given,sample size(n)=16mean(x¯)=36standard deviation(σ)=17α=1-0.85=0.15α2=0.075Z0.075=1.4395…

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: Ten car drivers were asked to parallel park 2 cars having very different wheel bases and turning…

A: Sample sizen=10 The 90% confidence interval for the mean differences is [-2, 5].   At the 90% level…

Q: We test a new drug on 18 patients. We get a sample mean improvement of 15 with a standard deviation…

A: Introduction: The nature of the population distribution is not given here. The sample size of 18 is…

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: Suppose the daily numbers of visitors at the Grand Canyon national park are normally distributed.…

A: Solution: From the given information, the confidence interval for the population mean is (17124,…

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: The population average score on a personality measure is ? = 300 and the population standard…

A: The population average score on a personality measure is 300 and the population standard deviation…

Q: A survey of 100 customers showed that 36 of them preferred brand B of a particular product. Give a…

A: p = proportion of people vote for BSample size : n = 100Number of favorable outcomes : x =…

Q: You are testing the claim that the proportion of men who own cats is smaller than the proportion of…

A: As per our company guidelines we are supposed to answer only first question. Kindly repost other…

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: You want to get a 95% confidence interval for the difference between the percentage of females with…

A:

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: confidence interval for a population mean is (56,78), with a margin of error of 11. What is the…

A: From provided information, Confidence interval for population mean is (56, 78), with margin of error…

Q: Of the 1,000 people, 550 people used company s's smartphone and 460 people used company a's…

A: Given: n= 1000 ,x= 550.0 At 95.0 % confidence level , z score= 1.96 Need to find confidence…

Q: A recent study by the McGraw-Hill company showed that 61% (1621) of college students use their…

A: Given, Proportion of college students use their smartphones for study = 0.61Total number of students…

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: 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: Suppose we know that the mean score among the population of college students taking the GMAT test is…

A: Here Given  Sample size=n=100 Population Mean=1000=μ Population sd=σ=1200 Here SAMPLE SIZE IS…

Q: The confidence interval for a population mean is (7.32, 7.52). What are the sample mean and the…

A: given data, the confidence interval for a population mean is (7.32,7.52)sample mean and margin of…

Q: Nearly one-half of Americans ages 25 to 29 are unmarried. How large a sample is necessary to…

A: The provided information is The margin of error is E=0.02 α=0.05 The critical value is zc=1.96…

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: Explain what would happen to the length of the interval if the confidence level were decreased to…

A: Here Given  Sample size=n=60 Sample mean=x¯=12.88 And From Normal table Critical values for  95 C.I…

Q: Paint used to paint lines on roads must reflect enough light to be clearly visible at night.…

A: The hypothesized population mean is 35.