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I need to find confidence interval for two independent samples.Here is the data
Sample 1
n=31
mean=0.49
s=0.82
sample 2
n=31
mean=0.37
s=1.14
…
we’ve learned about “margins of error” and “confidence intervals”, which allow us to estimate not just quantities we care about, but also our level of uncertainty about those quantities.
*Open your …
Statistics
$201) What is the average delay in departures from Oregon Airports?
Hint 1: You’ll want to take the average of “DepDelay”.
2) We have a …
Tri-County Utilities, Inc., supplies natural gas to consumers in a three-county area. The company purchases natural gas from two companies. …
To find the standard deviation of the diameter of wooden dowels, the manufacturer measures 19 randomly selected dowels and finds the standard deviation of the sample to be s=0.16. find …
A study of college football games shows that the number of holding penalties assessed has a mean of 2.2 penalties per game and a standard deviation of 1.1 penalties per game. What is the …
3. There is a claim that fatal DWI crashes are mostly due to Weekend drinkers. A random sample of such accidents showed the …
Using the raw measurement data presented above, determine whether or not there exists a statistically significant difference between the salaries …
The Red Lobster restaurant chain regularly surveys its customers. On the basis of these surveys, the management of the chain claims that …
The owner of a moving company would like to be able to predict the number of hours required to complete a move by using the number of cubic feet …
The Office of Admissions at State University developed a study skills program as part of the freshman orientation. At the end of the first …
The number of bowls of soup served was sampled during a lunch period 11:00 a.m -2:30p.m. at a soup stand on a weekday. below is the sample: 71 63 92 58 93 74 92 99 82 63 92 91 63 54 76 …
The frequency distribution shows the results of 200 test scores. Are the test scores normally distributed? Use a=0.01. Complete the questions …
The following data were obtained from an independent-measures research study comparing three treatment conditions. Use an ANOVA with α = 0.05 to determine whether there are any …
The following data summarize the results from an independent-measures study comparing three treatment conditions. N = 18 G = 90 EX2 = 567 Treatment I II III n = 6 n = 6 n = 6 M = 4 M = 5 …
The filling variance for boxes of cereal is designed to be .02 or less. A sample of 41 boxes of cereal shows a sample substandard deviation of …
The diameters of 100 rods produced by Rodco are listed in the file P03_18.xlsx. Based on these data, you can be …
During the first quarter of 2003, the price / earnings ratio for stocks listed on the new york stock exchange generally ranged from 5 to 60. assume that we want to estimate the …
The amount of time a bank teller spends with each customer has a population mean = 3.10 minutes and standard deviation = .40 minutes. If a random sample of 16 customers is selected …