find the point esitmate, the standard error, the margin of error for the given confidence levels of x and n x = 29, n = 80, confidence level 92%

Q: Suppose we have data from a sample. The sample mean is 32, and the error bound for the mean is 2.4…

A: From the provided information, Sample mean (x̅) = 32 Error bound (E) = 2.4 Confidence level = 95%

Q: 4. This data set: 14, 8, 1, 7, 8, 4, 5, 13, 5, 9 has sample mean 7.4 and sample standard deviation…

A: T table is used to calculate the. Critical value

Q: A simple random sample of 40 observations has a mean of 25.  The population standard deviation, σ =…

A: Given values, sample size (n) = 40 Mean = 25 Standard deviation = 5

Q: A History professor at a local community college wants to estimate the percent of college students…

A: In statistical inference there are two types of estimation,  1) Point estimation and 2) Interval…

Q: earchers wanted to know whether body mass index d conducted a study a study among 1,360 women ents…

A: A relative risk collates the risk of disease, injury, or death among one group with risk among other…

Q: A study found that for a sample of cars traveling on Interstate 70, the average speed was 70 mph…

A: We have to find margin of error.

Q: The mean hours of worked for United Airlines pilots is 46 hours/month based upon a sample of 25…

A: Given: Sample size, n=25 Sample mean, X=46 hours Sample standard deviation, s=3 hours The level of…

Q: The confidence interval for a population porportion is (0.52, 0.78). What the the sample proportion…

A: Given that, Confidence interval for population proportion is (0.52, 0.78)

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: Find the critical z* for a level 52 % confidence interval.

A: 52% confidence interval Alpha= 0.52  1- alpha = 1- 0.52 = 0.48   For right tail :  x= Alpha/2  For…

Q: 1. Find pand 4: In a survey of 80 children, 48 like to watch horror films. 110

A: According to bartleby expert guidelines we can answer only first question. Rest can be repost.

Q: Suppose that I construct a confidence interval for the mean test grade on exam 1 using Statcrunch…

A: From the given information, the confidence interval for the mean test grade on exam 1 is (68.9,…

Q: You recently sent out a survey to determine if the percentage of adults who use social media has…

A: a)Suppose p is the true population proportion of all adults who use social media.In a random sample…

Q: Determine the point estimate of the population mean and margin of error for the confidence interval.…

A: We have given the lower bound 19 Upper bound is 23

Q: Translate the statement into a confidence interval. Approximate the level of confidence. In a survey…

A:

Q: The confidence interval lower limit and upper limit for a population mean are (62.3, 67.3). What is…

A:

Q: The trade magazine QSR routinely checks the drive-through service times of fast-food restaurants. An…

A: The 80% confidence interval that results from examining 634 customers in Taco Bell's drive-through…

Q: for 98% e value of z* for a confidence level of 93%. Show your work on your own piece of paper. ake…

A: We have to find critical value for z.

Q: Use paired t-interval procedure to determine a 90% confidence interval for the difference between…

A: The data is (X, Y) = (49.3, 49), (43.2, 42), (50.4, 50), (36.3, 37), (52.3, 50)

Q: You are interested in studying whether students living in the dorms or students living off campus…

A: given information : n1=35,n2=50m1=5.7, m2=6.3s1=1.4 ,s2=1.3 for obtain 99% confidence interval first…

Q: n describing confidence intervals on a mean, z and t intervals are frequently mentioned. How are z…

A: The t distribution is similar to the standard normal distribution but takes a slightly different…

Q: Suppose a random sample of 50 basketball players showed the average height to be 78 inches. Also,…

A: From the provided information, Population standard deviation (σ) = 1.5 Sample mean (x̄) = 78 Sample…

Q: Kindly tell what is confidence interval in stats thanks.

A: An essential idea in statistics is a confidence interval (CI), which provides a range that, with a…

Q: please give me answer step by step

A: Step 1: Suppose µ is the population mean commute time of all TCC students. The sample size, sample…

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

A: Given information: Confidence level=0.99 and 0.95. Margin of error(E)=2 points. Sample standard…

Q: part d please

A: From Normal table the z value for 95% confidence is 1.96.

Q: Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The…

A: Given,sample size(n)=15mean(x¯)=3.93standard deviation(s)=0.6239degrees of…

Q: A confidence interval for the difference in the number of friends that men and women have was found…

A: The formula of the midpoint of the confidence interval formula is,

Q: In a survey of 3361 adults in a country, 44% believe the economy is getting better. Three weeks…

A: Given Information: In a survey of 3361 adults in a country, 44% believe the economy is getting…

Q: Please test hypothesis for a mean or for a proportion. hypothesized mean = 125 sample mean = 135…

A:

Q: The average weight of 50 randomly selected minivans was 4,200 pounds. The minivan population…

A: Introduction: The 100 (1 – α) % confidence interval for the population mean, μ, when the population…

Q: For a confidence level of 99% with a sample size of 22, find the t-score. Did not see how to work…

A: The provided information is:

Q: In 2011 the U.S. Department of Transportation reported with 95% confidence that the average length…

A: We have to find confidence interval value.....

Q: A study of 420,047 cell phone users found that 139 of them developed cancer of the brain or nervous…

A: (a)   Obtain the 95% confidence interval estimate of the percentage of cell phone users who develop…

Q: Use the confidence interval to find the margin of error and the sample mean. (1.59,1.89)

A: Given data,Lower limit=1.59Upper limit=1.89Margin of error=?

Q: If n=21, (x-bar)-43, and s-8, find the margin of error at a 95% confidence level Give your answer to…

A: Given information:

Q: A sample of 500 cargo ships reveals that 65 of them have had encounters with pirates in the south…

A:

Q: The confidence interval for a population porportion is (0.68, 0.82). What the the sample proportion…

A: Given, Confidence Interval is (0.68, 0.82) Upper limit U  = 0.82 Lower limit L = 0.68