#12 Normal Curve: Tree RingsTree rings dates were used extensively in archaeological studies. At one site on the mesa, tree ring dates gave a mean date of \( \mu_1 = \text{year 1272} \) with a standard deviation \( \sigma_1 = 35 \text{ years} \). At a second site, the tree ring dates gave a mean \( \mu_2 = \text{year 1122} \) with a standard deviation \( \sigma_2 = 40 \text{ years} \). Assume that both sites had dates that were approximately normally distributed. In the first area, an object was found and dated as \( x_1 = \text{year 1250} \). In the second area, another object was found and dated as \( x_2 = \text{year 1234} \).(a) Convert both \( x_1 \) and \( x_2 \) values to z values, and locate both of these values under the standard normal curve.(b) Which of these two items is the more unusual as an archaeological find in its location?

Answered: Image /qna-images/answer/a5e37c35-847a-4ddc-ad3c-3850265afe34.jpg

Answered: (a) Convert both x¡ and x2 values to z…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Let Z be the standard normal variable with μ = 33 and σ = 2.9. Find the value of P(31 < X < 39). Round your standard normal variable to two decimal places before using the table of values. (Give your answer to four decimal places.)
Find the following z values for the standard normal variable Z. (You may find it useful to reference the z table. Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) a P(Z ≤ z)= 0.9068 b. P(Z > z) = 0.679 C. P(-z≤ Z≤ z) = 0.75 d. P(0 ≤ Z≤ z) = 0.4629 0.97
Which of the following percentile corresponds to the area beneath the standard normal curve from a z score of –1.00 to + 1.00?
b. Determine the critical value and draw the normal curve.
i need the F=, and P value
2
26 The table to the right shows the cost per ounce (in dollars) for a random sample of toothpastes exhibiting very good stain removal, good stain removal, and fair stain removal. At α=0.01, can you conclude that the mean costs per ounce are different? Perform a one-way ANOVA test by completing parts a through d. Assume that each sample is drawn from a normal population, that the samples are independent of each other, and that the populations have the same variances. Very good stain removal Good stain removal Fair stain removal 0.37 0.75 0.60 0.49 2.66 1.18 0.33 0.46 0.46 1.64 0.33 0.50 0.58 0.41 1.39 (b) Identify the degrees of freedom for the numerator and for the denominator, determine the critical value, and determine the rejection region. The degrees of freedom for the numerator, d.f.N, is ____ and the degrees of freedom for the denominator, d.f.D, is _____ The critical…
Find each of the shaded areas under the standard normal curve using a TI-84 calculator. Round the answers to four decimal place: Part 1 of 4 The area of the shaded region is Part 2 of 4 The area of the shaded region is 1. Part 3 of 4 -0.96 Part 4 of 4 -0.35 The area of the shaded region is 0.56 1.56 X X 1.89 2.23 5 5 S
Some frozen food dinners were randomly selected from this week's production and destroyed in order to measure their actual calorie content. The claimed calorie content is 200. Here are the calorie counts for each frozen dinner selected: 191 189 198 210 207 203 209 215 209 204 200 194 Assume the distribution of calories is normal. (a) The test statistic (z/t) is Use two decimals. (b) Does the sample indicate that the mean calorie content is 200? Set a = (c) Find the P-value of the test in (a)-(b). 0.07 ? Yes No
Answer only #12
Use the data in the Excel workbook, on the worksheet labeled "Sample," for this question. The first column is just an observation index labeled i to name each observation. The observations are a simple random sample with replacement from a much larger population. The second column contains specific values y of a random variable Y found in some sampled population. The population standard deviation is not known to you, but it is known that Y has a Normal distribution in the sampled population. Compute the lower bound of an 85% confidence interval for the population mean of the random variable Y. i y 1 37 2 40 3 31 4 27 5 23 6 33 7 29 8 26 9 39 10 28 11 34 12 39 13 31 14 34 15 39 16 33 17 31 18 42
I need help with normal curve

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS

(a) Convert both x¡ and x2 values to z values, and locate both of these values under the standard normal curve. (b) Which of these two items is the more unusual as an archaeological find in its location?