27,25,20,15,30,34,28,25 Compute "Mean" and Standard Deviation of it.
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27,25,20,15,30,34,28,25 Compute "
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- A highly selective boarding school will only admit students who place at least 2.5 standard deviations above the mean on a standardized test that has a mean of 200 and a standard deviation of 24. What is the minimum score that an applicant must make on the test to be accepted? The minimum score that an applicant must make on the test to be accepted isThe average score that can be obtained on a standardized test at your school is114with a standard deviation of 16. You are a reporter for the school newspaper and you want to know if thetypical deviation, o,Student athletes are different. To find out, he surveys a random sample of 18student athletes and determines that for the sample, the mean score is112with a standard deviation of12.If we assume that the scores that the student athletes obtained follow an approximately normal distribution, is there enough evidence to conclude, at the level of significance of 0.05, which standard deviation is higher among student athletes? Perform a two-tailed test. Then complete the following. Carry intermediate calculations to three or more decimal places. (If necessary, you can refer to a list of formulas .) (to) Formulate the null hypothesish and the alternative hypothesish 1' ho: 0 0 (b) (c) (d) h ! 1 0 Determine which type of test statistic to use. (Choose an option) Find the value of the test…A study of the wages of 100 persons grouped in class-intervals of Rs. 10-12, 12-14..etc. revealed the mean wage to Rs. 32.02 and its standard deviation as Rs. 13.18. Later it was discovered that the wage of a labourer who was getting Rs. 57 was misread as 27. Calculate the correct mean and standard deviation.
- I wanted to test if the mean Exam 3 score in this course was different than the mean Exam 2 score. To conduct this test I used the 30 students in my course last semester as my sample. I first calculated the difference in scores between Exam 2 and Exam 3 ("Exam 2 score - Exam 3 score"). The sample mean of these differences is 2.0 and the sample standard deviation of the differences is 3.0. What is your decision for this test? Group of answer choices 1. Reject the null hypothesis 2. Retain the null hypothesisThe winner for Best Male Actor is 35 years old and winn3er for Best Female Actress is 47. The mean for all male actors is 45.1 with a standard deviation of 5.9 years. Mean age for all actresses is 31.1 and the standard deviation is 12.1 years. Relevent to gender, which winner has the most extreme age?appcoulasc.comy student/assessment/6260690bba413c0009752bcd/dass/62324bac98e2d6000916675a/uta/6260693c6087c00009746b15/ten Question 11/12 > NEXT A BOOKMARK Lee records the height of players on a basketball team, and calculates the mean absolute deviation of the set of data. What does the mean absolute deviation of the set of data describe? O the average height of a player on the team the height of the tallest player on the team the difference in height between the shortest and tallest player the average difference in height between each player and the mean height acer
- 10. mean = 54.2; standard deviation = 12,3When Emma commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 53 minutes and a standard deviation of 5 minutes. What percentage of her commutes will be shorter than 62 minutes, to the nearest tenth? Statistics CalculatorA study of B.A. (Hons.) Economics examination results of 1000 students in 1990 gave the mean теаn grade as 78 and the standard deviation as 8.0. A similar study in 1995 revealed the mean grade of the group as 80 and the standard deviation as 7-6. In which year was there the greater (i) absolute dispersion, (ii) relative dispersion ? What can we say about the average performance of the students over time?
- A study of the wages of 100 persons grouped in class-intervals of Dollar 10-12, 12 14 ... etc. revealed the mean wage to dollar. 32.02 and its standard deviation as dollar. 13.18. Later, it was discovered that the wage of a labourer who was getting Dollar 57 was misread as 27. Calculate the correct mean and standard deviation?It seems these days that college graduates who are employed FT work more than 40-hour weeks. Data are available that can help us decide if this is true. A survey was recently sent to a group of adults selected at random. There were 15 respondents who were college graduates employed FT. The mean number of hours worked per week by these 15 respondents was 44 hours, with a standard deviation of 8 hours. Assume that the population of hours worked per week by college graduates employed FT normally distributed with mean u. Can we conclude that u is greater than 40 hours? Use the 0.1 level of significance. Perform a one-tailed test. Carry intermediate computations to 3 or more decimal places and round answers as specified.To qualify for a medical study, an applicant must have systolic blood pressure in the 60% of the middle range. If the systolic blood pressure is normally distributed with a mean of 120 and a standard deviation of 4, find the upper and lower limits of blood pressure a person must have to qualify for the study.
