"On the Standford-Binet test, the mean IQ is 100. A class of 6 kindergarten pupils were tested with a resulting mean of 90 and astandard deviation of 6.17. Does this group have a mean significantly different than the norm group? Use 0.05 as your level ofsignificance."(A) "Yes, in fact the class is above the norm, on average."B) "No, I am 100% sure that they are within the norm value."C) It is safe to assume that they are within the norm unless additional evidence say otherwise.(D) "Yes, however, the class is lower than the norm, on average"

Claim : group have a mean significantly different than the norm group.

Answered: "On the Standford-Binet test, the mean…

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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For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 39 beats per minute, the mean of the listed pulse rates isx= 78.0 beats per minute, and their standard deviation is s = 20.7 beats per minute. a. What is the difference between the pulse rate of 39 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 39 beats per minutes to a z score. d. If we consider pulse rates that convert to z scores between - 2 and 2 to be neither significantly low nor significantly high, significant? the pulse rate of 39 beats per minute a. The difference is beats per minute. (Type an integer or a decimal. Do not round.) b. The difference is standard deviations. (Round to two decimal places as needed.) c. The z score is z = (Round to two decimal places as needed.) d. The lowest pulse rate is
A student scored 66 on a general science test where the class mean and standard deviation were 82 and 8, respectively; he also scored 53 on a psychology test where the class mean and standard deviation were 58 and 3, respectively. In which class was his relative position higher?
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The heights of adult men in America are normally distributed, with a mean of 69.3 inches and a standard deviation of 2.67 inches. The heights of adult women in America are also normally distributed, but with a mean of 64.8 inches and a standard deviation of 2.54 inches. a) If a man is 6 feet 5 inches tall, what is his z-score? z = 3.26
O Mastenng Biology |. The college physical education department offered an advanced first aid course last summer. The scores on the comprehensive final exam were normally distributed, and the z-scores for some of the students are shown below. Robert 1.08 Juan 1.88 Haley -1.94 Joel 0.00 Jan -0.96 Linda 1.76 (a) Which of thesc students scored abovc the mcan? (Sclcct all that apply.) O Robert O Juan O Haley O Joel O Jan O Linda (b) which of these students scored on the mean? (Select all that apply.) O Robert O Juan O Haley O Joel O Jan O Linda (c) Which of these students scored below the mean? (Select all that apply.) 1052 AM ORobert 73"F Mostly sunny 7/30/2021 P Type here to search (36
"On the Standford-Binet test, the mean IQ is 100. A class of 7 kindergarten pupils were tested with a resulting mean of 103 and a standard deviation of 5.28. Does this group have a mean significantly different than the norm group? Use 0.1 as your level of significance." It is safe to assume that they are within the norm unless additional evidence say otherwise. B "Yes, however, the class is lower than the norm, on average" "Yes, in fact the class is above the norm, on average." D) "No, I am 100% sure that they are within the norm value."
An article in a local town newspaper discusses the results of state test scores in their town. The reporter headlines, "The students in this town don't have the necessary skills. The overall student population is less than what is reported at the state level" The state test says that a score of 261 or higher on its test reflects the student has the skills needed to graduate. A local town newspaper conducted a random sample of 200 students and found the mean to be 257 and a standard deviation of 41 points. a. State the null (H0) and alternative (Ha) hypotheses. b. Give the standard score for the data. c. Find the P-value for this significance test. e. Sketch your results on the standard Normal distribution f. Summarize the conclusion in the context of this problem.
For a data set of the pulse rates for a sample of adultfemales, the lowest pulse rate is 33 beats per minute, the mean of the listed pulse rates is x=71.0 beats per minute, and their standard deviation is s=23.1 beats per minute. a. What is the difference between the pulse rate of 33 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 33 beats per minute to a z score. d. If we consider pulse rates that convert to z scores between −2 and 2 to be neither significantly low nor significantly high, is the pulse rate of 33 beats per minute significant?
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Hi! I need your help. Thank you so much! A maintenance supervisor is comparing the standard version of an instructional booklet with one that has been claimed to be superior. An experiment is conducted in which 26 technicians are divided into two groups, provided with one of the booklets, then given a test a week later. For the 13 using the standard version, the average exam score was 72.0, with a standard deviation of 9.3. For the 13 given the new version, the average score was 80.2, with a standard deviation of 10.1. Using the 0.05 level of significance, what conclusion can be reached? Use Pooled-Variances T-Test.

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