The mean score of a random sample of 60 students is 145 with a standard deviation of 40. Find the 95% confidence limit for the population mean

Q: In order to qualify for a police academy, applicants are given a test of physical fitness. The…

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Q: Assume that adults have IQ scores that are normally distributed with a mean of 99.2 and a standard…

A: Given info: IQ scores are normally distributed with a mean of μ=99.2 and a standard deviation…

Q: If a distribution has a mean of 50 and a standard deviation of 5, what value would be -1 standard…

A: Given, μ=50σ=5z=-1x=?

Q: 60 people were asked to measure their pulse rates after completing a 3 km run. The mean was 105…

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Q: Suppose the exam average in a class is 48% with a standard deviation of 15. What proportion of…

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Q: For a random sample of 65 overweight men, the mean of number of pounds that they were overweight was…

A: Given, Sample size = 65 Sample mean = 32 Population standard deviation = 3.8   Since the population…

Q: The mean score of the students on pre-assessments is 10 and the standard deviation is 2. What was…

A:

Q: 1900 in a certain county. Of the 124 whites, the mean life span was 45.3 years with a standard…

A: Given Data : For Sample 1 x̄1 = 45.3 s1 = 12.7 n1 = 124 For Sample 2…

Q: Marian found that the average height of female students in her psychology class was 63 inches with a…

A: According to the provided data,

Q: The mean score of a random sample of 22 students applicants who took the college entrance…

A: Following data is given The mean score of an entrance exam of 22 students is 76.9 and population…

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.