15.) The mean wingspan for the population of a species of bird is known to be 30 inches, and thestandard deviation for the wingspan of the population of the species of bird is known to be 4inches. A researcher believes that the mean wingspan is actually less. He measures thewingspan of a sample of 10 birds, and finds that the mean wingspan of the birds in the sampleis 28 inches. For a = 0.01 decide whether the mean wingspan is actually lower.a. State the null hypothesis and the alternative hypothesis.b. Is the test left-tailed, right-tailed, or two-tailed?c. Find the test statistic02225)d. Find the critical value or p valuef. Summarize the results2e. Should you reject the null hypothesis?20910112Bulevfabitino od brisYazarifooyrt Hund belan buy luode b20Muzadi asosmmuz

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Answered: 15.) The mean wingspan for the…

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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Need help on b and c. For c.) please indicate yes or no and why it would be the case. (Descriptive as possible)
Identify the level of measurement of the data , and explain what is wrong with the given calculation.In a set of data , blood lead levels are represented as 1 for low , 2 for medium , and 3 for high . The average ( mean ) of the 642 blood lead levels is 1.3
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For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 38beats per minute, the mean of the listed pulse rates is x =73.0 beats per minute, and their standard deviation is sequals=23.2 beats per minute. a. What is the difference between the pulse rate of 38 beats per minute and the mean pulse rate of the females? b. How many standard deviations is that [the difference found in part (a)]? c. Convert the pulse rate of 38 beats per minutes to a z score. d. If we consider pulse rates that convert to z scores between minus−2 and 2 to be neither significantly low nor significantly high, is the pulse rate of 38 beats per minute significant?
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Which statement below is correct? a. Standard deviation should be used when calculating z for a single score, while standard error should be used when calculating z for a sample mean. b. When calculating z for a single score or for a sample mean, the standard error should be used. c. Standard error should be used when calculating z for a single score, while standard deviation should be used when calculating z for a sample mean. d. When calculating z for a single score or for a sample mean, the standard deviation should be used.
Use z scores to compare the given values. The tallest living man at one time had a height of 238 cm. The shortest living man at that time had a height of 142.4 cm. Heights of men at that time had a mean of 175.45 cm and a standard deviation of 5.59 cm. Which of these two men had the height that was more extreme? ... Since the z score for the tallest man is z = 0 and the z score for the shortest man is z = the man had the height that was Im- more extreme. (Round to two decimal places.) shortest tallest
Given the following mean and standard deviation, find the z-score for each individual score. Find the difference between the data value and the mean then divide by the standard deviation. X = 10 a. X= 8 s = 2 Z = %3D b. X= 38 X = 40 s = 5 Z = С. X%3D94 X = 100 s = 10 z = d. X= 65 X = 50 s = 10 Z = %3D e. X= 30 X = 25 s = 5 Z =
Suppose that 50 measurements were taken and the mean was calculated to be 4.55. Assume next that one of the data items was 19.4This was assumed to be an outlier as was discarded. What would be the mean of the remaining 49 numbers? I
A sample has a mean of M = 30. If one person with a score of X = 35 is removed from the sample, what effect will it have on the sample mean? Lütfen birini seçin: A. Cannot be determined from the information given B. The sample mean will decrease. C. The sample mean will increase. D. The sample mean will remain the same.
The data is in the height column. Answer 7 to 10
Use the following information for the question. The average travel time to work for a person living and working in Kokomo, Indiana is 17 minutes. Suppose the standard deviation of travel time to work is 4.5 minutes and the distribution of travel time is approximately normally distributed.Which of these statements is asking for a measurement (i. e. is an inverse normal question)? A.What percentage of people living and working in Kokomo have a travel time to work that is between thirteen and fifteen minutes? B.If 15% of people living and working in Kokomo have travel time to work that is below a certain number of minutes, how many minutes would that be?

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