Find the margin of error at a 80% confidence level for estimating the population mean if n=11,¯x=39 and s=6   Round your answer to 2 decimal places.

Q: The confidence interval for a population porportion is (0.58, 0.78). What the the sample proportion…

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Q: Determine the 80% confidence interval estimate for the population mean of a normal distribution…

A: given data n = 144x¯ = 1500σ = 11180% ci for μ = ?

Q: If n=590 and ˆp (p-hat) =0.81, find the margin of error at a 95% confidence level Give your answer…

A: Obtain the critical value: The confidence level is 100*(1–α)% = 95%. The critical value…

Q: Sales team of a New Ventures Company is in the process of introducing a new product. As an initial…

A: We want to find the sample size.

Q: The confidence interval for a population porportion is (0.53, 0.73). What the the sample proportion…

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Q: The confidence interval for a population porportion is (0.45, 0.63). What the the sample proportion…

A: The confidence interval for a population proportion is 0.45,0.63. The sample proportion is, p^=Upper…

Q: What is the percentage of scores that lie between a z score of -2 and a z score of 1?

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Q: what will be the value of X at the z score =-2.5 given, mean=45 and standard deviation =5?

A: Mean = 45 Standard deviation = 5  Z score =-2.5 We have to find X score  for given data...

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: Hello. I appreciate any help. Thanks.

A: Standard Error of estimate:S=√MSEMean square error:The formula for the mean square error is,MSE =…

Q: When the size of samples gets larger, the standard error of the sample means…

A: Solution Since sample size (n) is inversely proportional to standard error, The standard error…

Q: n=550 x=440 90% confidence

A: Given that,  n=550 x=440  The sample proportion is, Critical values: By using the standard normal…

Q: The distribution scores on a standardized test is approximately Normal with a standard of =16. If a…

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Q: true proportion of voters in favor of a referendum is unknown period a random sample of 200 voters…

A: Formula : Point estimate = p̂= x/n

Q: From the given information in each case below, state what you know about the P-value for a…

A: Given the above information,Solution:Decision rule on H0:Reject H0 if p-value < αFail to reject…

Q: you want to obtain a sample to estimate a population mean. based on previous evidence, you believe…

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Q: magine that you conduct a study and estimate that the prevalence of hypertension among employees of…

A: It is given that the estimated prevalence is 24%.

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 17 for the population…

A:

Q: The confidence interval for a population mean is (7.36, 7.52). What the the sample mean and the…

A: Solution: Given information: The confidence interval for a population mean μ is ( 7.36, 7.52) Upper…

Q: A sample of 14 television tubes produced by a company showed a mean lifetime of 1838 hours and a…

A: Given that, n=14σ=233x¯=1838 The formula for calculating the standard deviation of the population of…

Q: Dwight wants to estimate the mean calorie content in beets with 90% confidence.  He believes that…

A: The population standard deviation, sigma is 17. The z-critical value for the 90% confidence interval…

Q: How can I find the 95% confidence interval for a hazard ratio based on theta1 and theta2 from an…

A: The hazard ratio can be defined as the ratio of failure rates of two survival distributions.  In…

Q: You are performing a left-tailed test with test statistic z = - 0.65, find the p-value to 4 decimal…

A: We have to find p value.

Q: A confidence interval for the difference in the percent that men and women scored on their…

A: confidence interval = (-3 , 0.1)

Q: The scores on a standardized test are normally distributed with a mean of 90 and standard deviation…

A: The test score is 0.6 standard deviations above the mean is obtained below: From the given…

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: 14 A machining operation produces bearings with diameters that are normally distributed with mean…

A: The diameter of bearings is normally distributed. The mean of the distribution is .The standard…

Q: A researcher is looking to estimate the mean LSAT score of law school applicants who completed their…

A: From the provided information, Margin of error (E) = 2 points Level of confidence = 99% Standard…

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 1988, on the math SAT, the males taking the exam averaged about 500, while the females averaged…

A: From the provided information,

Q: A doctor wants to estimate the mean trigliceride level of all 20- to 29-year-old females (in…

A: Given data  Margin of error (E) = 3  95% ci for μ. S = 17.1 n = ?

Q: a sample of 1963 scores was drawn from a normal distribution with a mean of 19.84 and a standard…

A: Given that, μ=19.84,σ=1.918n=1963 Consider that exactly 2.3512% of the distribution of means falls…

Q: Find 95% confidence interval for the population mean, if the sample size is 40, the sample mean is…

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Q: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random sample…

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Q: The mean score of Grade 11 students in a General Math examination was observed to be 75 with a…

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Q: The odds difference = exp((0.15*20)-(0.15*30)), the standard error(se) = 0.06 which is on the scale…

A: From the given information, Consider, odds difference = exp((0.15*20)-(0.15*30)) and  standard…

Q: Find a Confidence interval for the true Population Proportions if n = 30,        x = 75, and the…

A: From the given information, X=75 and n=30.

Q: The scores on a test are normally distributed with a mean of 150 and a standard deviation of 30.…

A: The normal distribution:A continuous random variable X is said to follow normal distribution if the…

Q: Lorraine was in a hurry when she computed a confidence interval mean. Because the standard deviation…

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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

Q: the mean IQ of tweleve year old boys in a school district is 118; the standard deviation is 18. if a…

A: Obtain the probability that the mean of the sample is greater than 120. The probability that the…

Q: In a study with lower quartile 100, upper quartile 140 and median as 130 How many people can have…

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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.