A random sample is drawn from a population of known standard deviation 11.3. Construct a 90% confidence interval for the population mean based on the information given: n = 36, sample mean = 105.2 *

Q: The GPA of accounting students in a university is known to be normally distributed. A random sample…

A: A random sample of 26 accounting students has a mean of 2.61 and a standard deviation of 0.13.

Q: How large a sample should be selected to provide a 95% confidence interval with a margin of error of…

A: Given  Margin of error=8, level of significance ɑ=0.05, standard deviations σ=10

Q: A random sample of 21 Camden County College students had a mean age of 24 years, with a standard…

A:

Q: How large a sample should be selected to provide a 99% confidence interval with a margin of error of…

A: Given,standard deviation(σ)=50margin of error (E)=10α=1-0.99=0.01α2=0.005Z0.005=2.58

Q: sample of 10 adult males had a mean systolic blood pressure of 125. It is believed that the standard…

A: GIVEN DATA, n=10x¯=125s=15CI=0.98α=1-0.98=0.02

Q: A sample of 28 adults attending a country fair determined that the mean age was 34, given that the…

A:

Q: A random sample of 12 chemists from Washington stats shows an average salary of $39,420 with a…

A: The sample mean one (Washington): x¯1=$39,420, sample mean two (New Mexico): x¯2=$30,215, population…

Q: A professor decided to estimate the average time it takes for students to take tests. He measured…

A: The sample mean is 108 minutes and the sample size is 45.

Q: How large a sample should be selected to provide a 95% confidence interval with a margin of error of…

A: Given : Margin of error = 5 α = 0.05 Population standard deviation = σ = 30 zα2 = z0.052 = 1.96

Q: How much do wild mountain lions weigh? Six adult wild mountain lions are captured and released.…

A: Given data , 68, 104, 128, 122, 60, and 64.

Q: The average measured verbal IQ (IQV) scores of children is 100.  In a sample of 20 children, the…

A: Population mean (µ) = 100Standard deviations (σ) = 18.5Sample size (n) = 20Sample mean (x̅) =…

Q: The total of individual weights of garbage discarded by 17 households in one week is normally…

A:

Q: GPA of SMSU students is normally distributed with standard deviation (sigma) = 0.8. The average GPA…

A:

Q: The total of individual weights of garbage discarded by 15 households in one week is normally…

A: The total of individual weights discarded by 15 households is normally distributed with mean 29.7…

Q: A random sample of 25 individuals finds a sample mean value of 18 and sample standard deviation of…

A: Given information- Sample size (n) = 25 Mean x̅ = 18 Standard deviation (s) = 6 Significance…

Q: A sample of 22 adults attending a country fair determined that the mean age was 35 given that the…

A: Answer: From the given data, Sample size(n) = 22 mean (x¯) = 35 Standard deviation(σ) = 10 95%…

Q: Determine the margin of error in estimating the population mean, μ. Based on a sample of size 45, a…

A:

Q: The total of individual weights of garbage discarded by 17 households in one week is normally…

A: The objective of this question is to find the 99% confidence interval for the mean weight of garbage…

Q: A firm is looking to employ a person as an engineer. Applicants of earlier years have standart…

A: Obtain the 90% confidence interval for the mean of all applicants exam results The 90% confidence…

Q: A sample of 20 body temperatures resulted in a mean of 98.3° and a standard deviation of .24°. Use…

A: From the provided information, Sample size (n) = 20 Mean (x̄) = 98.3 Standard deviation (s) = 0.24…

Q: A random sample of 56 fluorescent light bulbs has a mean life of 645 hours and assume that the…

A: Given,sample size(n)=56sample mean(x¯)=645population standard…

Q: Calculate the 95% confidence interval and the 99% confidence interval for a sample of 81 where the…

A: Given : Sample Size, n = 81 Sample Mean, x̄ = 50 sample standard…

Q: A recording company wants to estimate the mean length of musical cd’s being recorded. A random…

A: