Suppose that the mean score of a class of 30 students was 80. The 20 male...
Suppose that the mean score of a class of 30 students was 80. The 20 male students in the class had a mean score of 72. What was the mean score for the 10 female students? Mean Score for Female Students =
please explain how you came to your conclusion because I have tried multiple times and keep getting the wrong answer. THank you
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Suppose that the mean score of a class of 30 students was 80.
The 20 male...
The mean score on a science assessment test for 49 randomly selected male high school students...
The mean score on a science assessment test for 49 randomly selected male high school students was 153. Assume the population standard deviation is 36. The mean score on the same test for 50 randomly selected female high school students was 147. Assume the population standard deviation is 34. At a= 0.05, can you support the claim that the mean score on the science assessment test for male high school students is greater than the mean score for female high...
The mean score on a science assessment for 59 male high school students was 319.5 and...
The mean score on a science assessment for 59 male high school students was 319.5 and the standard deviation 2.5. The mean test score on the same test for 40 female high school students was 298.9 and the standard deviation was 1.2. At a 002, can you support the claim that mean scores on the science assessment for male high school students were higher than for the female high school students? a. Claim: ?? Ha: LTT, RTT or TTT? b?...
The mean exam score for 44 male high school students is 20.1 and the population standard...
The mean exam score for 44 male high school students is 20.1 and the population standard deviation is 4.7. The mean exam score for 58 female high school students is 19.6 and the population standard deviation is 4.1. At a = 0.01, can you reject the claim that male and female high school students have equal exam scores? Complete parts (a) through (e). Click here to view page 1 of the standard normal distribution table. Click here to view page...
Bob got an 85 on a test. His class had a mean score of 80 with...
Bob got an 85 on a test. His class had a mean score of 80 with a standard deviation of 3. Mary got a score of 79 on a test. Her class's mean score was 72 with a standard deviation 4. Which student performed better relative to their classmates?
The Mean ACT score for 43 male high school students is 21.1 with a standard deviation...
The Mean ACT score for 43 male high school students is 21.1 with a standard deviation of 5.0. The mean ACT score for 56 female high school students was 20.9 with a standard deviation of 4.7. Test the claim that male and female students have equal test scores. Test at a level of significance of 0.01 Make sure you give an answer for each of the following: a) Claim in symbols and labeled Ho or Ha and labeled as the...
9. A De Anza statistics instructor wonders about the performance of male and female college students...
9. A De Anza statistics instructor wonders about the performance of male and female college students in her statistics class. She wants to know whether there is a difference between final exam scores of male and female students. From all of the statistics classes she has taught in the last two years, she randomly selected scores of 63 female students and 58 male students. The females had a sample mean score of 78 with a standard deviation of 6. The...
1. Suppose in a class of 100 students who took an exam scored out of 100,...
1. Suppose in a class of 100 students who took an exam scored out of 100, the 68thpercentile of the exam scores was 72. Thus, _________% of the students who took the exam scored less than a 72. a.32% b.68% c.72% d.28% e.None of the above 2. Suppose in a class of 80 students who took an exam scored out of 100, the 40thpercentile of the exam scores was 58. Approximately how many of the 80 students scored above a...
98. A class of 20 students has a mean grade of 80 on a test. Nineteen...
98. A class of 20 students has a mean grade of 80 on a test. Nineteen of the students has a mean grade between 79 and 82, inclusive. a. What is the lowest possible grade of the other student? b. What is the highest possible grade of the other student?
#17 please When a class of 23 students took the SAT, they had a mean score...
#17 please
When a class of 23 students took the SAT, they had a mean score of 1445 with a standard deviation of 178. Construct a 99% confidence interval for the mean SAT score of all students (w). O (1368, 1522) O (1381, 1509) (1352, 1538) O (1340, 1550) QUESTION 17 What is the margin of error of the confidence interval constructed in exercise 167
PLEASE ANSWER CLEARLY Suppose there are 30 students in a class of which 10 are boys...
PLEASE ANSWER CLEARLY
Suppose there are 30 students in a class of which 10 are boys and 20 are girls. a. What is the probability of randomly selecting without replacement, a boy first and then two girls? Round decimal answers to 3 decimal places. Suppose there are 30 students in a class of which 10 are boys and 20 are girls. b. What is the probability of randomly selecting at least one boy in 5 students with replacement)? Show fraction(s)...
The mean score on a science assessment for 59 male high school students was 319.5 and the standard deviation 2.5. The mean test score on the same test for 40 female high school students was 298.9 and the standard deviation was 1.2. At a 002, can you support the claim that mean scores on the science assessment for male high school students were higher than for the female high school students? a. Claim: ?? Ha: LTT, RTT or TTT? b?...
The mean exam score for 44 male high school students is 20.1 and the population standard deviation is 4.7. The mean exam score for 58 female high school students is 19.6 and the population standard deviation is 4.1. At a = 0.01, can you reject the claim that male and female high school students have equal exam scores? Complete parts (a) through (e). Click here to view page 1 of the standard normal distribution table. Click here to view page...
Bob got an 85 on a test. His class had a mean score of 80 with a standard deviation of 3. Mary got a score of 79 on a test. Her class's mean score was 72 with a standard deviation 4. Which student performed better relative to their classmates?
#17 please
When a class of 23 students took the SAT, they had a mean score of 1445 with a standard deviation of 178. Construct a 99% confidence interval for the mean SAT score of all students (w). O (1368, 1522) O (1381, 1509) (1352, 1538) O (1340, 1550) QUESTION 17 What is the margin of error of the confidence interval constructed in exercise 167
PLEASE ANSWER CLEARLY
Suppose there are 30 students in a class of which 10 are boys and 20 are girls. a. What is the probability of randomly selecting without replacement, a boy first and then two girls? Round decimal answers to 3 decimal places. Suppose there are 30 students in a class of which 10 are boys and 20 are girls. b. What is the probability of randomly selecting at least one boy in 5 students with replacement)? Show fraction(s)...
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