Find a 99% confidence interval for μ.

Q: Humerus bones from the same species of animal have approximately the same length-to-width ratios. It…

A: Solution: Given information: n= 100 Sample size  x= 5.6 Sample mean s= 0.25 Sample standard…

Q: If a population has a standard deviation σ of 36 units, what is the standard error of the mean if…

A: The population standard deviation is 36.

Q: o=58. From sample sizes of 36 adults find the proportion of sample means having values of at least…

A: here , sample size  = 36 population  mean = 162 population standard deviation = 58

Q: The weights of adult California Condors average 14.8lbs with a standard deviation of 3.25lbs.…

A:

Q: The mean value of the 130 observation is 17 with standard deviation deviation equal to 0.98. Find…

A:

Q: Suppose a small paint manufacturing company has a daily production that is normally distributed with…

A: Solution: It is given that a small paint manufacturing company has a daily production that is…

Q: In a county male height is normally distributed with a mean of 175 cm and a standard deviation of 6…

A:

Q: The scores on a standardized test are normally distributed with a mean of 115 and standa deviation…

A: Z = 2.2 , μ  = 115 , σ= 15

Q: Find a 90% confidence interval for the population mean, if the sample size is 58, the sample mean is…

A:

Q: An Army official wants to estimate the mean weight of a particular type of weapon.  He takes a…

A: Given that, Mean = 48.1 Standard deviation = 0.12 Sample size = 100 98% confidence level

Q: Samples of size 5 are selected from a manufacturing process. The mean of the sample ranges is .50.…

A: Explanation:Here given the sample size and mean range values  Then find the population of the…

Q: Ten oil tins are taken at random from an automatic filing machine. The mean weight of the 10 tins is…

A:

Q: if a sample n = 16, mean = 10.3,standard deviation is 2.6. calculate a 95% confidence interval.

A:

Q: The nails produced by a machine are assumed to have a mean of 5.0 cm. A random sample of 80 nails…

A: Null hypothesis: H0: µ=5. Alternative hypothesis: H1:µ>5. This is a right tailed test. Here, the…

Q: Suppose that striped dolphin lengths are normally distributed with a population standard deviation…

A: The formula for the minimum sample size is as follows: Here, zα/2 is the critical value at 95%…

Q: umerus bones from the same species of animal have approximately the same length-to-width ratios. It…

A:

Q: The heights of a group of boys are normally distributed with a mean of 54 inches and a standard…

A:

Q: If the sample has standard deviation 2.1, what is a reasonable approximation to the range of this…

A: It is given that the standard deviation of the data is 2.1.

Q: If the population standard deviation is 1.3, then Find the standard deviation of x for an SRS of…

A: Answer: From the given data, Population standard deviation(σ) = 1.3 Number of observation(n) = 82

Q: Find the Confidence interval for the true Population Mean if a sample of 50 has a mean of 26.8 and a…

A:

Q: A random sample of 100 observations produced a mean x̅ =38.5 and a standard deviation of 3.2. find a…

A: Given information Sample size(n) = 100 Sample mean x̅ =38.5 Sample standard deviation = 3.2…

Q: The lengths of individual fish in a pond have a non-Normal distribution with a mean of 18.6 cm and a…

A:

Q: If the mean and standard deviation of a sample of size 45 is 1050 and 52 respectively, construct a…

A: It is given that Sample mean = 1050Sample standard deviation = 52Sample size = 45Confidence level =…

Q: If the population standard deviation is 6.8, then Find the standard deviation of x for an SRS of 64…

A: Answer: From the given data, Population standard deviation σ = 6.8 Sample size (n) = 64

Q: Suppose that another sample of resting heart rates for five Math students was obtained: 72, 68, 66,…

A: From the given data we want to know the data value .

Q: If the population standard deviation is 1.3, then Find the standard deviation of x for an SRS of 65…

A: Answer: From the given data, population standard deviation (σ) = 1.3 number of observations (n) = 65…

Q: Suppose the mean blood glucose of a population of adults is 162 with a standard deviation of 58.…

A:

Q: a life time of a certain brand of tires is approximately normally distributed with a mean of 42,500…

A: Given information- Population mean, µ = 42,500 miles Population standard deviation, σ = 3200 miles…

Q: If a sample of 144 male weights has a mean of 266 pounds and standard deviation of 32 pounds. The CV…

A: Given data Mean (x̅ ) = 266Standard deviation (s) = 32Coefficient of variation(CV) for sample is…

Q: What is the test statistic for this procedure?

A: Assume that all conditions are met. The mean of the differences was 1.33 and the standard deviation…

Q: random sample of 36 people in Edirne city was asked how much their monthly income was. The sample…

A: Given: Sample size (n) = 36 Sample standard deviation (s) = 1200 Sample mean x¯=16000 Confidence…

Q: Find the 90% confidence interval for the standard deviation of the lengths of pipes if a sample of…

A: given data s = 10.2 n = 22 90% CI for σ = ? α = 1 - 0.90 = 0.10df = n - 1 = 21χ2L = χ21-α2,n-1…

Q: A medical doctor who wanted to study the heights of adult men and women took a random sample of 150…

A: Given n1=150 n2=120

Q: he seasonal output of a new experimental strain of pepper plants was carefully weighed. The mean…

A: normal distribution ,μ=17σ=1.75n=200p(13<X<16)=?

Q: 95% confidence interval of the true mean of the noise levels in the operating rooms

A: Sample size = 23 Mean noise level = 37.9 decibels  Standard deviation = 7.6 decibels  For 95%…

Q: A certain grade egg must weigh at least 2.0 Oz. If the weights of eggs are normally distributed with…

A: Given data The weights of eggs are normally distributed with mean of 1.5 0z and standard deviation…

Q: The average height of students at a university from an SRS of 14 students gave a standard deviation…

A: Given Sample size=14 Standard deviation=2.5

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.