Maximum breadth of samples of male Egyptian skulls from 4000 B.C. and 150 A.D.(based on data from Ancient Races of the Thebaid by Thomson and Randall-Maciver):4000 B.C. :131 119 138 125 129 126 131 132 126 128 128 131150 A.D. :136 130 126 126 139 141 137 138 133 131 134 129Changes in head sizes over time suggest interbreeding with people from other regions.Find the sample standard deviation and use a 90% confidence interval to determinewhether the head sizes appear to have changed from 4000 B.C. to 150 A.D. Explain yourresult.

Answered: Image /qna-images/answer/1609ca09-f3de-4ca5-860f-5956853a4ada.jpg

Answered: Maximum breadth of samples of male…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A developer wants to know if the houses in two different neighborhoods were built at roughly the same time. She takes a random sample of six houses from each neighborhood and finds their ages from local records. The accompanying table shows the data for each sample (in years). Complete parts a through e below. E Click the icon to view the data table. a) Find the sample means for each neighborhood. y, = years y2 = years (Type integers or decimals.)
The director of a shipping company believes that there is a relationship between the cost of a customer’s shipment (£) and the weight (lb) of the package being shipped. For investigating this possible relationship, a random sample of nine customer shipments was selected and the weight (in lb) and the cost (rounded to the nearest £) for each shipment were recorded. The results obtained are shown in the table below (on the picture). required: a) ) The scatter diagram showing the relationship between the cost of acustomer’s shipment (£) and the weight (lb) of the package being shipped, is given below. Comment fully and clearly on this diagram. i) ii)
The Wind Mountain excavation site in New Mexico is an important archaeological location of the ancient Native American Anasazi culture. The following data represent depths (in cm) below surface grade at which significant artifacts were discovered at this site (Reference: A.I. Woosley and A.J. McIntyre, Mimbres Mogollon Archaeology, University of New Mexico Press). 85 45 75 60 90 90 115 30 55 58 78 120 80 65 65 140 65 50 30 125 75 137 80 120 15 45 70 65 50 45 95 70 70 28 40 125 105 75 80 70 90 68 73 75 55 70 95 65 200 75 15 90 46 33 100 65 60 55 85 50 10 68 99 145 45 75 45 95 85 65 65 52 82 For this problem, use seven classes. (a) Find the class width.(b) Make a frequency table showing class limits, class boundaries, midpoints, frequencies, relative frequencies, and cumulative frequencies. (Give relative frequencies to 4 decimal places.)
A. Find the first quartile B. Find the 2nd quartile C. Find the 3rd quartile
A researcher is examining cooperation between peers by observing children at six years eight years and 10 years old if the researcher uses a cross-sectional design and obtains 20 scores for each age how many children participated in the entire study? A. 40 B. 20 C. 60 D. 120
Suppose the following information is identified: I = 79.1 %3D n = 80 %3D o = 5.37 %3D t-s c.) What would be the best point estimate for a population estimate?
A student wishes to determine the average life-span of a household light bulb. She randomly collects 15 light bulbs. The issue that may arise from her survey is… The bias will be high. The accuracy will be low. The precision will be low. The standard error will be too low.
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The number of observations in a population is said to be the size of population. O True False
A legal case rested on whether a patent witness' signature was written on top of key text in a notebook or under the key text. The zinc measurements for three notebook locations on a text line, on a witness line, and on the intersection of the witness and text line-are provided in the table below. Complete parts a through c below. Text line Witness line 0.319 0.384 0.327 Intersection Find the test statistic. HT-1400 0.321 0.307 0.327 t = (Round to two decimal places as needed.) Find the p-value. p-value= (Round to three decimal places as needed.) a. Use a test (at a = 0.02) to compare the mean zinc measurement for the text line with the mean for the intersection. Let μ represent the mean zinc measurement for the text line, let uw represent the mean zinc measurement for the signature of a patent witness, and let μ, represent the mean zinc measurement for the intersection line. Select the correct hypotheses below. OA. Ho: HT-Hw=0, H₂: HT μ₁0 OB. Ho: HT-H₁0, H₂: HT-H₁0 O C. Ho: HT-HW = 0,…
The collection of the ages of all the U.S. first ladies when they married is a A. population B. Parameter C. statistics D. Sample
Sample 2: Selected-Response Given: ARST ~ AJKL, RS = 8 centimeters, JK = 16 centimeters, and KL = 14 centimeters. 2. What is the length, in centimeters, of ST ? A. В. С. 22 STA oeni everi T2A slpnehi bluow noltsmotened birlw D. 24 nobsion 081 dinu 8 iol noidelensd zixs-x srd 19Vo nottoels 4

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