e method of tree ring dating gave the following years A.D. for an archaeological excavation site. Assume that the population of x values has an approximately normal distrib 1299 1187 1285 1271 1268 1316 1275 1317 1275 (a) Use a calculator with mean and standard deviation keys to find the sample mean year x and sample standard deviation s. (Round your answers to the nearest who A.D. S = yr (b) Find a 90% confidence interval for the mean of all tree ring dates from this archaeological site. (Round your answers to the nearest whole number.) lower limit A.D. unnor limit AD

Q: he Figure is a Normal Distribution Determine: a. Mean b. Standard Deviation c. Magnitude at 25…

A: Mean  x¯=∑fixi∑f Standard Deviation σx=∑fixi-x¯2N or =n∑fx2-∑fx2n(n-1)

Q: Suppose that resting pulse rates among healthy adults are normally distributed with a mean of 70…

A: Given data Normal distributionμ = 70 bpmσ = 12 bpmP(x>88) = ?

Q: Section 2. Assume again that you are a wildlife biologist studying morphological cha turtles. Now…

A: Sample size n=36Sample mean=99Sample standard deviation=16

Q: Calculate the mean, median, standard deviation, the first quartile, the third quartile and the IQR.…

A: As per guidelines we will solve the first question only, please repost other questions for more…

Q: In Country A, the population mean height for 3-year-old boys is 37 inches. Suppose a random sample…

A: GivenMean(x)=36.2standard deviation(s)=3sample size(n)=15significance level(α)=0.05